Clothes Are Getting Smarter

A still from an animated film shows a man looking uncomfortable wearing an unusual looking pair of pants.

Clothes Are Getting Smarter

Soon, we may be able to wear smart clothing—shirts and pants that use technology to help our bodies work better.

A still from an animated film shows a man looking uncomfortable wearing an unusual looking pair of pants.

© 1993 Aardman Animations/BBC

The 1993 film The Wrong Trousers inspired scientists to invent a pair of pants that helps people move more easily.

Smart technology is all over the place. Humans can ask Alexa to play a favorite song, program a robot to vacuum a room, or send a drone to deliver a package. And soon, we may be able to wear robotic clothing—shirts and pants with smart technology.

Scientists, computer programmers, and clothing designers are teaming up to create smart clothing with a variety of capabilities. The idea is that, rather than just keep us warm, clothing could help our bodies work better.

In 2018, for example, a group of scientists invented a pair of pants with electrical pumps rooted in the fabric. The technology monitors the movement of the wearer to determine when to go into action. The pumps send air into small tubes to help the wearer—possibly someone who is elderly or disabled—do things like get up from a chair.

Jonathan Rossiter, a professor of robotics at the University of Bristol in England, helped develop the technology. “We have developed [pants with] lightweight bubble artificial muscles, which could help people to stand up or to lift objects,” Rossiter told The Guardian.

In Australia, researchers recently developed another smart textile (fabric). In this case, robotic threads were knitted into regular cloth. The threads, which contain fluid-filled tubes, can be programmed to move and even lift wearers who are up to 192 times their weight. The technology has a lot of potential uses, but some scientists envision creating “smart suits” that could be worn to help improve a person’s strength and mobility. 

“Like the Iron Man suit or Spiderman suit,” said lead scientist Thanh Nho Do, comparing such a suit to costumes worn by Marvel Comics superheroes. 

These developments are only the beginning, scientists say. They expect to develop a variety of smart clothing to improve mobility, track people’s vital signs, and more.

Will smart clothing ever make superheroes out of ordinary people? Stay tuned.

Did You Know?

© GCShutter—E+/Getty Images

In 2016, scientists at Australia’s Royal Melbourne Institute of Technology developed a fabric that can clean itself. The fabric contains tiny metal structures that, when exposed to light, break down organic matter, like dirt and sweat.

Smart Clothing, Medieval Style

© loops7, © Burlingham—iStock/Getty Images; Photo illustration Encyclopædia Britannica, Inc.

Computers and robotics didn’t exist back in the Middle Ages. But in Europe, at least one type of clothing was brilliantly designed to protect the wearer. 

Knights and other military men wore a form of body armor called chain mail, or just mail. It was made up of small iron rings that were interlaced and then welded or riveted shut. Knights could cover themselves from head to toe with chain mail, which was intended to provide some protection from injury during sword fights. But chain mail was still flexible enough to allow the wearer to move and do knight-like things, such as riding horses. Knights sometimes wore chain mail under a suit of plate armor. The plate armor provided additional protection while the chain mail helped protect spots where there were gaps in the armor. 

In 2021, scientists from the California Institute of Technology and NASA’s Jet Propulsion Laboratory developed a more modern form of chain mail. This new material is made of plastic or aluminum particles that interlock. It’s soft enough that it can be molded into different shapes, but it contains technology that enables it to go from soft to rigid on command. The material could be used as body armor in the military, as a body suit to help people walk, or as a cast that could become less stiff as a patient heals.

Courtesy Caltech

This material, developed by engineers at the California Institute of Technology and NASA’s Jet Propulsion Laboratory, is inspired by chain mail.

Smart Suit

A high-tech suit of armor transformed an ordinary man into a comic book superhero called Iron Man.

© 2008 Paramount Pictures/Marvel Entertainment

Learn more at Britannica School!

WORD OF THE DAY

smart

PART OF SPEECH:
adjective
Definition:

: controlled by computers and able to do things that seem intelligent

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Back from the dead?

Black and white photo of two striped, dog-like animals in an enclosure

Back From the Dead?

The Tasmanian tiger has been extinct since the 1930s. But a team of scientists is working to bring it back.
Black and white photo of two striped, dog-like animals in an enclosure
Courtesy of stock imagery/Alamy
The Tasmanian tiger went extinct in the 1930s.

A team of scientists is working to bring the Tasmanian tiger species back from the dead. The species, which is also known as the thylacine, has been extinct since the 1930s.

The Tasmanian tiger got its name from the stripes that ran across part of its back. The animal’s head looked like a dog or a wolf, and its body was roughly as large as a medium-sized dog. But while it resembled a canine, the Tasmanian tiger was actually a marsupial. The female carried a litter of young in a pouch on her body until they were about halfway to adulthood. 

Originally, the Tasmanian tiger was found in both Australia and on a nearby island called Tasmania. The species disappeared from mainland Australia at least 2,000 years ago. Scientists aren’t sure why, but they believe changes in climate affected Australia’s thylacine population. The Tasmanian tiger continued to thrive on Tasmania for hundreds of years, playing an important role as the island’s apex (top) marsupial predator. But by the 1800s, humans were blaming the Tasmanian tiger for killing their livestock. They hunted the species to extinction.  

Bringing back the Tasmanian tiger won’t be easy. Scientists will need to figure out the animal’s genome—a map of its DNA—and compare it with the genome of its closest living relative, a mouse-sized marsupial called the fat-tailed dunnart. They plan to take cells of the fat-tailed dunnart and change the DNA of these cells so that they more closely resemble thylacine cells. Scientists would then “build” a Tasmanian tiger from these cells. Because the cells would originate from a different species, the newly created Tasmanian tigers wouldn’t be exactly the same as the extinct species. 

A rodent with large ears stands on its hind legs and looks at the camera.
Courtesy of stock imagery/Alamy
The fat-tailed dunnart is related to the Tasmanian tiger.

The project has raised concerns. Some scientists point out that genetically altered animals often have health problems, and some don’t survive. Others wonder about the consequences of reintroducing species into the wild. But the work to bring back the Tasmanian tiger continues.

“To me the real benefit of any de-extinction project such as this is the awesomeness of it,” Tom Gilbert of the University of Copenhagen told CNN. “Doing it seems very justified to me simply because it will excite people about science, nature, [and] conservation.”

Did You Know?

Map of Australia with labeled illustrations of species that are found only in Australia.
© likemuzzy, © Vector Tradition, © mart/Shutterstock.com; Photo illustration Encyclopædia Britannica, Inc.
About 90 percent of Australia’s land mammal species are found nowhere else in the world—and some of these species are a bit…weird. (Have you ever really looked at a kangaroo?) That’s because Australia is surrounded by water. Isolated for millions of years, the continent’s species evolved differently from other species.

The Dodo: Gone Forever?

Etching showing a dodo standing near a guinea pig
© Photos.com/Getty Images

Humans have wiped out hundreds of animal species in the past 500 years. One of the most famous is the dodo. The dodo was a flightless bird that lived on the island of Mauritius in the Indian Ocean. It had blue-gray feathers and a large head and beak. The dodo weighed about 50 pounds (23 kilograms), making it larger than a turkey. 

Dodos probably built their nests on the ground and laid only one egg at a time. They had no reason to be afraid that anything would harm them or their young. The species had no natural predators on the island. 

In about 1507, Portuguese sailors arrived on Mauritius. There had been no humans living on the island before the sailors came, so the dodo had no natural fear of people. The sailors, and humans who arrived after them, began hunting the dodos for their meat. Animals the humans brought with them, such as pigs and monkeys, ate dodo eggs and competed with dodos for food. The birds also lost their habitat as humans began settling on Mauritius. 

The dodo population could not survive so many threats. The last dodo was killed in 1681, less than 200 years after humans arrived on Mauritius.

In 2022, scientists announced that they had sequenced the DNA of the dodo bird, suggesting that the species could be brought back from extinction.

Learn more about the dodo at Britannica School

The Ones We've Lost

A family of five woolly mammoths walks through snow with mountains in the background.
© William Roberts—Auntspray/Dreamstime.com
The woolly mammoth went extinct thousands of years ago.
Many species have become extinct—and millions more are threatened.

Learn more at Britannica School!

WORD OF THE DAY

obliterate

PART OF SPEECH:
verb
Definition:
:  to destroy (something) completely so that nothing is left
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In Case You Missed It

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08.30.22

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08.26.22

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08.23.22

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08.16.22

Found: A Predatory Plant

Pitchers from a pitcher plants surrounded by moss and dirt

Found: A Predatory Plant

Scientists have discovered a type of meat-eating plant that lives underground.

Pitchers from a pitcher plants surrounded by moss and dirt
Courtesy of Martin Dancák
A newly discovered plant species captures its prey underground.

You can never be sure exactly what’s going on under the surface. Scientists on the island of Borneo discovered this when they found a previously unknown species of pitcher plant, a type of plant that’s carnivorous (meat-eating). This newly discovered species, which is called Nepenthes pudica, captures its prey underground.

Pitcher plants have “pitchers” that are open at the top and contain sweet fluid. The fluid attracts insects and other small prey—even rodents, in some cases. These animals climb into the pitcher to get a drink but can’t climb back up its smooth, slippery surface. Instead, they fall into the fluid, where they’re digested by the plant. Most such plants grow their pitchers above ground, but Nepenthes pudica is different because its pitchers are underground. 

The scientists discovered Nepenthes pudica by accident. They noticed leaves that they recognized as belonging to a pitcher plant but didn’t see any pitchers—at first. Then they spotted what looked like a damaged pitcher sticking out of the soil. When one of the scientists moved away surrounding moss, he exposed the pitchers and realized they had been growing under the moss.

Nepenthes pudica is the first known underground pitcher plant. There are more than 700 known carnivorous plants. A few of them catch their prey underground. But those other underground meat eaters aren’t pitcher plants. Their traps are small, so their prey is tiny or even microscopic.

Nepenthes pudica’s pitchers, which are up to 4.3 inches (10.9 centimeters) long, trap larger bugs that live underground, including ants, beetles, and mites. Peering into one of the pitchers, scientists found mosquito larvae, nematodes, and a previously unknown worm species.

Courtesy of Martin Dancák
The plant species Nepenthes pudica captures prey with pitchers that contain sweet fluid.

Wewin Tjiasmanto, a scientist who helped discover Nepenthes pudica, said the finding highlights the need to protect biodiversity on Borneo. The island is being threatened as forests are destroyed to make way for palm oil plantations. 

“We hope that the discovery of this unique carnivorous plant might help protect Bornean rainforests,” Tjiasmanto told CNN.

Did You Know?

An illustration of an animal-like Venus flytrap walking behind a fly that it is about to eat
© JrCasas/stock.adobe.com

Why do some plants eat meat? 

Most plants’ needs are met by sunlight, water, and nutrients in soil. But carnivorous plants develop in soil that lacks nutrients. Instead, they get their nutrients from insects and other animals.

A Killer Bunch

There are hundreds of species of meat-eating plants. Here’s more about just a few of them.

Venus Flytrap

Leaves on this plant come together to form a taco shape that snaps shut, trapping prey inside to be digested. But the leaves will shut only if the fly, spider, or other prey animal touches two of the tiny hairs inside the trap within 20 seconds. This prevents false alarms, such as when a leaf lands in the trap.

© Videologia—Creatas Video/Getty Images
A Venus flytrap gets a meal.

Sundew

Sometimes called “living flypaper,” the sundew has long, tentacle-like leaves that are covered in sticky hairs. The plant’s nectar attracts flies, mosquitoes, and other prey. Once an insect gets stuck on a leaf, that leaf will curl up, trapping the victim so that the plant can digest it.

© Reinhard Dirscherl—The Image Bank/Getty Images
The sundew attracts insects that get stuck on its leaves.

Butterwort

The sticky, pearl-colored goo on the leaves of this plant looks a bit like butter—or drops of water. Insects that land on the butterwort to get a drink find that the goo is so sticky they can’t escape. Then—you guessed it—the plant begins to digest them.

Five flies stuck on butterwort leaves.
© Paul Starosta—Stone/Getty Images

Sticky butterwort leaves trap hungry insects.

A Wasp’s Worst Enemy

There’s a lot more to learn about different species of pitcher plants.

© helivideo—Creatas Video+/Getty Images Plus

Learn more at Britannica School!

WORD OF THE DAY

subterranean

PART OF SPEECH:
adjective
Definition:

:  located or living under the surface of the ground

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In Case You Missed It

The U.S. Congress recently passed the biggest climate law in the nation’s history.

08.23.22

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08.16.22

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Congress Passes New Climate Bill

President Biden sits at a table with the presidential seal and signs a paper as Senator Joe Manchin, Senator Chuck Schumer, Representative James Clyburn, Representative Frank Pallone, and Representative Kathy Catson watch.

Congress Passes New Climate Bill

The U.S. Congress recently passed the biggest climate law in the nation’s history.

President Biden sits at a table with the presidential seal and signs a paper as Senator Joe Manchin, Senator Chuck Schumer, Representative James Clyburn, Representative Frank Pallone, and Representative Kathy Catson watch.
Drew Angerer/Getty Images News

U.S. lawmakers watch as President Joe Biden (seated) signs the Inflation Reduction Act into law on August 16, 2022.

The U.S. Congress recently passed the most significant climate law in the nation’s history. The legislation is set to reduce U.S. carbon emissions at a time when the effects of climate change have become uncomfortably clear.

The law is called the Inflation Reduction Act. (The name comes from other parts of the legislation that aim to lower costs for health care and energy, among other things.) It will devote nearly $370 billion to reducing carbon emissions—the human-made pollution that is the biggest contributor to climate change. The goal is to get Americans to reduce their use of fossil fuels to power their homes, workplaces, and vehicles.

The law creates tax credits and rebates for companies and individuals who invest in renewable energy technology—things like solar panels, wind turbines, and electric vehicles. That means that those who switch to renewable energy will pay less in taxes. 

The law also contains other climate protection measures. For example, it devotes funding to installing energy-efficient technology at industrial sites. Money will also be used to restore forests, which help to lessen the effects of climate change. In addition, fossil fuel companies will be required to pay fees when they produce excess pollution. And communities that are being heavily impacted by pollution will receive funding for clean-up efforts.

Experts say the new law is set to reduce carbon emissions by 40 percent from their 2005 peak by the year 2030. 

Reactions to the law have been mixed. Some critics say it costs too much money, while others say it does not go far enough to address the climate crisis. But supporters say that, in a year when the effects of climate change have led to droughts, floods, and heat waves, any action is important.

“It’s so important that we do this, and the benefits are still likely to be so much larger than the costs,” Samantha Gross, director of the Energy Security and Climate Initiative at Brookings told the Associated Press. “This is still unquestionably the right thing to do.”

President Biden signed the bill into law on August 16, 2022.

Did You Know?

The fashion industry produces one-tenth of the world’s carbon emissions. Making one cotton shirt produces the same level of emissions as driving a car 35 miles (56.3 kilometers).

That equals 0.0014 metric tons of carbon. It may not seem like a lot, but there are more than 209 billion cotton t-shirts produced each year. That adds up to 293,063,400 metric tons of carbon each year.

Many activities produce carbon emissions. Check out this graph to learn more.

© Tatomm—iStock/Getty Images Plus; Photo illustration Encyclopædia Britannica, Inc.

Changemakers

Young people around the world are working to protect our planet. Here are a few of their stories.

Courtesy of Leah Namugerwa

Leah Namugerwa (Uganda)

In 2018, at age 14, Leah Namugerwa led a campaign to ban the use of plastics in Uganda, where she lives. She was further spurred into action by the rapid deforestation that has taken place in Uganda. Namugerwa decided to celebrate her 15th birthday by planting 200 trees. Soon after, she launched the Birthday Trees Project, which sends seedlings to anyone who wants to spend their birthday planting trees. Namugerwa has spoken about climate action at the World Urban Forum as well as other high-profile events.

Sean Gallup/Getty Images

Greta Thunberg (Sweden)

In 2018, when she was 15 years old, Greta Thunberg founded Fridays for Future, a movement in which young people skipped school on Fridays and instead protested in front of legislative buildings to urge lawmakers to pay more attention to climate change. Thunberg has spoken in front of the United Nations, the World Economic Forum, and many other powerful international bodies, demanding action and inspiring countless people to join the climate change movement.

Paras Griffin/Getty Images Entertainment

Jerome Foster II (United States) 

When he was 18 years old, Jerome Foster began protesting alone outside the White House, demanding action on climate change. Today, he is involved in many campaigns to curb the climate crisis. He’s also a member of the White House Environmental Justice Advisory Council, which advises the White House and government agencies on how to respond to the crisis. In addition, Foster is a voting rights advocate and the founder of OneMillionOfUs, an organization that mobilizes young people to be more involved with their governments and communities.

The Need for Trees

Many activists are trying to slow the pace of deforestation. Why do we need forests?

Logs piled up in a cleared area with a forest in the background
© Marcio Isensee e Sá/stock.adobe.com

Learn more at Britannica School!

WORD OF THE DAY

proactive

PART OF SPEECH:
adjective
Definition:

: controlling a situation by making things happen or by preparing for possible future problems

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In Case You Missed It

Basketball legend Bill Russell, who led the Boston Celtics to eight straight championships, has died.

08.16.22

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08.09.22

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The Great Bill Russell

Bill Russell wearing a Celtics uniform and dribbling a ball

The Great Bill Russell

Basketball legend Bill Russell, who led the Boston Celtics to eight straight championships, has died.

U.S. Information Agency/National Archives, Washington, D.C.; photograph, Rowland Scherman; Andrew Innerarity—Reuters/Alamy; © Jerry Coli/Dreamstime.com

Bill Russell, a basketball legend who helped the Boston Celtics win 11 National Basketball Association (NBA) titles, has died. He was 88.

Russell had an incredible career as both a player and a coach. As a student at the University of San Francisco, he led his team to 55 straight wins, won two National Collegiate Athletic Association (NCAA) championships, and won a gold medal at the 1956 Olympics. The same year he wowed at the Olympics, Russell was drafted by the Boston Celtics. Playing as a center, he was a defensive whiz and a renowned rebounder. It’s no accident that Russell was on the team during one of the eras when the Celtics dominated the NBA. The Celts won the championship every year between 1959 and 1966. In 1966, Russell became head coach of the Celtics—the first Black head coach in any of the nation’s four major sports leagues. He continued to play until 1969, leading the team to two more championships.

Although he was a hero to many, Russell was also the target of racist attacks. When Russell began his NBA career, racial segregation was legal in the southern United States. In 1961, while in Kentucky for a game, Russell was told he wouldn’t be served at a hotel coffee shop because he was Black. He and four other players informed their coach that they would not play in that night’s game and flew home. 

But life wasn’t necessarily easier in the North. Russell’s house in Massachusetts was burglarized and repeatedly vandalized with racial slurs. 

We’ve got to show our disapproval of this treatment or else [nothing will change],” Russell once said. “We have the same rights and privileges as anyone else and deserve to be treated accordingly.”

A vocal supporter of civil rights, Russell was in attendance when Martin Luther King, Jr., led a famous civil rights protest known as the March on Washington. He also spoke out against school segregation in Boston, which persisted into the 1970s.

Russell spent the later part of his career as a commentator, an author, and a basketball icon. Kareem Abdul-Jabbar, Magic Johnson, Michael Jordan, and many other players who came after Russell have said they consider him to be a hero.

“Bill Russell was a pioneer—as a player, as a champion, as the NBA’s first Black head coach and as an activist,” Michael Jordan wrote after Russell’s death was announced. “The world has lost a legend.”

Did You Know?

President Barack Obama laughs as he places a medal around a smiling Bill Russell’s neck.

United States President Barack Obama presented Bill Russell with the Presidential Medal of Freedom at a ceremony on February 15, 2011.

Chip Somodevilla/Getty Images News

In 2011, President Barack Obama awarded Bill Russell with the Presidential Medal of Freedom, the highest civilian honor given in the United States. The medal of freedom is given to people who have made major contributions to peace, prosperity, and the culture of the United States or the world.

Bill Russell’s Achievements

  • Eleven NBA championships
  • Five NBA Most Valuable Player (MVP) awards
  • Two NCAA championships
  • Selected to play in the NBA All-Star Game 12 times
  • 1963 NBA All-Star Game MVP
  • 21,620 career rebounds (only Wilt Chamberlain had more)
  • First Black head coach in the NBA
  • 2011 Presidential Medal of Freedom recipient
  • Elected to the Basketball Hall of Fame as a player in 1975
  • Elected to the Basketball Hall of Fame as a coach in 2021

Archive PL/Alamy, © Kittichai, pixelrobot, Arunas Gabalis/stock.adobe.com, Cmcnicoll; Animation Encyclopædia Britannica, Inc.

A Giant in More Ways Than One

Want to know more about Bill Russell?

Bill Russell wearing a Celtics uniform and dribbling a ball

CSU Archives—Everett Collection/Alamy

Learn more at Britannica School!

WORD OF THE DAY

trailblazer

PART OF SPEECH:

noun

Definition:

: a person who makes, does, or discovers something new and makes it acceptable or popular

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In Case You Missed It

Experts say that when teens have to be up for school early in the morning, they often don’t get enough sleep.

08.09.22

Extreme heat is affecting many parts of the world—even places where summers are not usually very hot.

08.02.22

The first images taken by the James Webb Space Telescope have been released, and they don’t disappoint!

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July 19 is the anniversary of the first day of the Seneca Falls Convention, a two-day meeting where attendees spoke out for women’s rights.

07.19.22

New Law Lets Kids Sleep Later

A teen on the side of a snowy road at dawn looks at his phone as a school bus approaches.

New Law Lets Kids Sleep Later

Experts say that when teens have to be up for school early in the morning, they often don’t get enough sleep.

A teen on the side of a snowy road at dawn looks at his phone as a school bus approaches.

Experts say that when teens have to be up for school early in the morning, they often don’t get enough sleep.

© Fertnig—E+/Getty Images

Do you ever wish you could sleep later in the morning? Some students in California will be able to hit the snooze button a few times, thanks to a new state law.

The legislation says California middle schools can’t begin the school day before 8 a.m. and high schools can’t start before 8:30 a.m. This is the first law of its kind to pass, although lawmakers in New Jersey and Massachusetts are considering similar legislation.

Why start the school day later? According to experts, teenagers need more sleep than adults do, and their bodies are wired to stay up later compared to people in other age groups. That can make it hard for teens to wake up and be alert in the early hours of the day. Experts say letting teens sleep later leads to less sleep deprivation, which can lead to better grades and improved mood. The American Academy of Pediatrics currently recommends that middle schools and high schools start at 8:30 a.m. or later. 

“It really is in those first early morning hours that children are just essentially half asleep,” said Matthew Walker, a professor of neuroscience at the University of California, Berkeley, in an interview with NPR. “They’re not absorbing information. So why are we putting them in the classroom?”

Similar laws have been proposed in other states over the years, but none of them passed. Such laws face opposition from people who argue that later school start times would disrupt scheduling for things like school buses and after-school activities. (If the school day starts later, then activities might need to run later too.) Opponents also say parents might find it difficult to make sure their kids get to school at that later time while they themselves are trying to get ready for work.

The California law will test these concerns…and whether students will benefit from snoozing a little later. It will go into effect for the 2022–2023 school year.

Did You Know?

© goredenkoff—iStock/Getty Images Plus; Animation Encyclopædia Britannica, Inc.

The length of a school day varies, depending on where you live. For middle schools in the United States, the average school day is 6.8 hours long. In Finland, it is five hours long. And in Taiwan, it’s 8.5 hours long.

Sleep By the Numbers

How much sleep do you need? A lot of it depends on how old you are. Here’s the breakdown, according to the Centers for Disease Control and Prevention (CDC).

Alt text: Table showing the recommended number of hours of sleep for seven age groups

Source: Centers for Disease Control and Prevention

Why So Sleepy?

Our bodies and brains need sleep, but why?

© Marcel Mooij/stock.adobe.com,  © guteksk7/Shutterstock.com, © Ponomariova_Maria—iStock, mixetto—E+/Getty Images, © Jenifoto406, Mrchan/Dreamstime.com; Animation Encyclopædia Britannica, Inc.

WORD OF THE DAY

somnolent

PART OF SPEECH:
adjective
Definition:

: tending to induce drowsiness or sleepiness

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In Case You Missed It

Extreme heat is affecting many parts of the world—even places where summers are not usually very hot.

08.02.22

The first images taken by the James Webb Space Telescope have been released, and they don’t disappoint!

07.26.22

July 19 is the anniversary of the first day of the Seneca Falls Convention, a two-day meeting where attendees spoke out for women’s rights.

07.19.22

Instagram is testing a form of technology that’s designed to tell which users are younger than 18.

07.12.22

The Heat Is On

Two girls in a water park with one pouring water over her head

The Heat Is On

Extreme heat is affecting many parts of the world—even places where summers are not usually very hot.

Two girls in a water park with one pouring water over her head

Two sisters played at a water park in California on June 12, 2022, when the temperature reached 115 degrees Fahrenheit (46 degrees Celsius).

© Sandy Huffaker/Getty Images News

If you live in the Northern Hemisphere, chances are you’ve been experiencing a very hot summer. Extreme heat has gripped parts of North America, Asia, and Europe—even in places where summers are normally mild. 

One country where the temperature has soared is the United Kingdom (U.K.). In July, parts of the U.K. experienced several days with temperatures higher than 90 degrees Fahrenheit (32 degrees Celsius). At the peak of the heat wave, on July 19, 2022, some areas reached just over 104 degrees Fahrenheit (40 degrees Celsius). This was the hottest temperature ever recorded in the U.K. 

Summer temperatures regularly get into the 90s and even climb above 100 degrees in parts of the U.S. and other countries. But hot weather is not the norm in the U.K., where summer high temperatures average in the 60s and 70s Fahrenheit (teens and 20s Celsius). As a result, the country’s structures aren’t built to withstand high temperatures. As the heat wave of 2022 continued, asphalt and concrete expanded and buckled, forcing officials to close roads and airport runways. 

U.K. government officials urged people to stay home, warning them that being outdoors for too long could be dangerous. But being indoors did not necessarily bring relief. Only about 5 percent of homes in the U.K. are air conditioned. Some people found refuge at shopping centers and offices, many of which are air conditioned. 

Recent heat waves have caused chaos even in places that are more accustomed to high temperatures. In Chongqing, China, for example, unusually high temperatures caused the roof of a museum to begin to melt. In Fort Worth, Texas, heat combined with a lack of rain caused the ground to shift, leading to water main breaks, which is when pipes carrying city water supplies crack. In parts of Europe, hot and dry conditions led to destructive wildfires.

Will next summer be cooler? It’s hard to say. 

While extreme heat waves used to be unusual, scientists say that’s no longer true. Climate change is changing everything. In July, the World Health Organization (WHO) said that as global temperatures rise, heat waves, along with other extreme weather, will become increasingly common. Scientists are concerned about the effect that high temperatures will have on agriculture as well as human health.

“The best solution to this will be…being very ambitious on tackling the causes of this global warming,” said Dr. María Neira, director of the Department of Public Health and Environment at the WHO.

Did You Know?

© brizardh/stock.adobe.com, © Lenazajchikova/Dreamstime.com, © Plasticrobot/Dreamstime.com; Animation Encyclopædia Britannica, Inc.

What’s the hottest spot on Earth?

According to the World Meteorological Organization, the highest air temperature ever was recorded in Death Valley National Park in California in 1913. The mercury reached 134 degrees Fahrenheit (56.7 degrees Celsius)!

Beat the Heat

Beagle puppy sitting in front of a fan
© jtyler—E+/Getty Images

What can you do when it’s super-hot outside…and inside? Check out these tips for staying cool when the temperature soars.

  • Water is your friend. Drinking water will keep your body hydrated enough to cool itself off by sweating.
  • Keep it cool (or cooler)! When you’re outdoors, stay out of the direct sun. Inside, close your blinds or curtains when the sun is streaming in through windows.
  • We love our fans! If you have ceiling fans or box fans, use them. Even if you have air conditioning, the fans will help spread the cool air so that you can turn down the A/C and save energy. 
  • Let that cool air in. If the mornings and evenings are cooler than about 72 degrees Fahrenheit (22.2 degrees Celsius), open the windows and use a fan to blow that cool air into your home. Close the windows when temperatures start to go up. 
  • Wear light-colored clothing. Dark clothing will absorb the light of the sun, making you feel hotter. Light-colored clothing will reflect the sun’s light and help keep you cool.
  • Remember, heat rises. It may be cooler to sleep on the first floor or even in a finished basement, if your house has one.

If you have pets, look out for them. Don’t let them stay outside in the heat for any longer than necessary, and make sure they have plenty of water to drink. And never, ever leave a pet in a hot car.

Hot Topic

You can read more about what’s causing climate change at Britannica School.

SVS/NASA

WORD OF THE DAY

sweltering

PART OF SPEECH:
adjective
Definition:

very hot

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In Case You Missed It

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Webb Wows Us

An explosion of gas from a star

Webb Wows Us

The first images taken by the James Webb Space Telescope have been released, and they don’t disappoint!

NASA, ESA, CSA, STScl, and B. Holler and J. Stansberry (STScl)

The James Webb Space Telescope has just begun its mission, but scientists say it is already changing the way we see the universe. Webb can detect infrared light, which the human eye can’t see, so it’s capable of giving us detailed images from deep space. Recently, the telescope released its first images…showing us parts of our universe that, until recently, have been mostly a mystery. 

One of the images revealed the Southern Ring Nebula, which is 2,500 light-years away from Earth. A nebula is a cloud made up of swirling dust and gases. It’s often the result of a dying star. Webb’s image of the Southern Ring Nebula shows that star, looking relatively hazy in the center of the nebula. The image also includes a brighter star that’s at an earlier stage of its life cycle and will one day eject its own nebula. 

New stars can form in nebulae, and Webb captured what scientists call a “stellar nursery”—a place where many stars are born. The image is of a region of the Carina Nebula, located 7,600 light-years away from our planet. It shows countless twinkling lights in and around a beautiful cloud of dust. NASA calls this region the Cosmic Cliffs because the dust cloud has taken on the shape of mountains and valleys. The stars in the Carina Nebula look tiny in the image, but NASA says many of them are much larger than our Sun. 

Another image shows a group of five galaxies known as Stephan’s Quintet. Four of these galaxies, which are located 290 million light-years away, are moving (as everything in the universe does) and interacting. When galaxies interact, it can result in the formation of new stars and new galaxies. The  image from Webb is giving scientists a front-row seat to witness this “cosmic dance,” as NASA calls it.

These amazing images are just the beginning. Webb could operate for as many as 20 years, plenty of time to provide detailed views of exoplanets (planets outside our solar system) as well as some of the oldest galaxies. Scientists can’t even predict everything Webb will show them.

“The universe has [always] been out there,” said Jane Rigby, Webb operations project scientist at NASA. “We just had to build a telescope to go see what was there.” 

Did You Know?

This video shows a simulation of galaxies colliding over billions of years.

Frank Summers (STScI), Gurtina Besla (Columbia University), and Roeland van der Marel (STScI)

Everything in the universe is moving. New galaxies can form when two galaxies collide. In about 4.5 billion years, our Milky Way galaxy will collide with the Andromeda galaxy, forming a new galaxy.

Star Power

An explosion of gas from a star

NASA Goddard

Supernovae look amazing, but they’re actually fairly common.

Stars can live for millions or even billions of years. The bigger a star is, the faster it uses its fuel, and the shorter its life will be. 

What does that mean for the Sun, the star on which we depend for heat and light? The Sun is a yellow dwarf—a medium-sized star. It’s about halfway through its lifespan. In about five billion years, the Sun will expand to a red giant and then collapse. It will cast off its outer layers, leaving its core behind in a nebula of gas. The remaining core will be a dense object called a white dwarf that will shine as a star for trillions of years.

When the life of a giant star—one that’s at least five times the mass of our Sun—comes to an end, there’s an enormous explosion called a supernova. Here’s how it works:

Massive stars burn huge amounts of nuclear fuel at their cores. This produces a lot of energy, so the core gets very hot. Heat generates pressure, and that pressure keeps the star from collapsing. But when the star runs out of fuel, it cools off, causing the pressure to drop. Gravity wins. The star collapses in a giant explosion—a supernova. Dust and gas get thrown out into space, creating a nebula and, in some cases, a very dense object called a black hole.

Webb of Wonders

The James Webb Space Telescope is just getting started. What else can it show us?

Illustration of the James Webb Space Telescope in orbit above Earth

© Grejak/Dreamstime.com

WORD OF THE DAY

resplendent

PART OF SPEECH:
adjective
Definition:

: very bright and attractive

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In Case You Missed It

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Road to Equal Rights

Composite image showing portraits of Stanton and Mott, a map of the Seneca Falls area, and the signatures to the Declaration of Sentiments

The Road to Equal Rights

July 19 is the anniversary of the first day of the Seneca Falls Convention, a two-day meeting where attendees spoke out for women’s rights.

Composite image showing portraits of Stanton and Mott, a map of the Seneca Falls area, and the signatures to the Declaration of Sentiments

© Kean Collection—Archive Photos/Getty Images, © Hulton Archive—Archive Photos/Getty Images, Library of Congress, Washington, D.C., © atdr/stock.adobe.com; Photo illustration Encyclopædia Britannica, Inc.

Lucretia Mott (top) and Elizabeth Cady Stanton organized the Seneca Falls Convention.

July 19 is the anniversary of the first day of the Seneca Falls Convention, which took place in 1848 in Seneca Falls, New York. The event, organized by activists Elizabeth Cady Stanton and Lucretia Mott, aimed to expand women’s rights in the United States.

Although the United States was founded under the ideal that “all men are created equal,” Stanton, Mott, and other activists knew this wasn’t the reality. Only white men had guaranteed rights. Other Americans did not. This was especially true for enslaved Black Americans. The law did not even consider enslaved people to be people. White women were far better off, but they didn’t have the same rights as white men. In most states, they weren’t allowed to sign contracts or own property, and their educational opportunities were limited. And since women weren’t allowed to vote, they were unable to participate in elections for leaders who would champion their cause. The purpose of the Seneca Falls Convention was to draw attention to these inequalities and challenge the nation to live up to its ideals.

The two-day event drew more than 300 women and men. The attendees discussed whether to adopt a document called the Declaration of Sentiments. Written by Stanton and modeled after the Declaration of Independence, the document began, “We hold these truths to be self-evident: that all men and women are created equal.” It resolved that, under the ideals of the United States, women were entitled to certain rights, including property ownership, equal education, and suffrage (the right to vote). 

Only one of the resolutions in the Declaration of Sentiments turned out to be controversial—women’s suffrage. But Stanton, along with abolitionist Frederick Douglass, were eventually able to convince enough attendees to support voting rights for women. The document was ratified on July 20.

Seneca Falls was only one milestone in a long fight for women’s rights. In the decades that followed, many states would pass laws that expanded certain rights for women. In 1869, Wyoming (which wasn’t yet a state) granted women full voting rights. Some other states and territories followed. More than 50 years later, in 1920, Congress ratified the 19th Amendment, which guaranteed women in the United States the right to vote. 

You can read the Declaration of Sentiments at Britannica School.

Did You Know?

© Twoellis/Dreamstime.com, Encyclopædia Britannica, Inc.; Photo illustration Encyclopædia Britannica, Inc.

In New Jersey, some women could vote as early as 1776. The state’s first constitution granted voting rights to everyone who was old enough and had a certain amount of money. Married women (who couldn’t own property) weren’t permitted to vote. Historians are not certain whether Black New Jerseyans were allowed to vote.

In 1807, the New Jersey legislature restricted voting rights to tax-paying, white male citizens. New Jersey women would not be allowed to vote again until the passage of the 19th Amendment in 1920.

Righting Some Wrongs

Many Black women were involved in the fight for women’s suffrage (right to vote) in the United States. Here are some of their stories.

Library and Archives Canada

Mary Ann Shadd Cary

Mary Ann Shadd Cary was born in Delaware in 1823. Although slavery was legal in Delaware, Cary’s parents were free. When Cary was 10 years old, the family moved to the free state of Pennsylvania, where they helped people escape enslavement as part of a network known as the Underground Railroad.

Cary became a teacher and then a lawyer. After the Civil War, she spoke out in favor of amending the U.S. Constitution to give Black Americans citizenship and the right to vote. When the 15th Amendment granted the vote to Black men but not women, Cary got more heavily involved in the women’s suffrage movement.

Library of Congress, Washington, D.C.
(reproduction no. LC-USZ62-75978)

Frances Ellen Watkins Harper

Born to free Black parents in 1825, Frances Ellen Watkins Harper was working as a teacher when she became involved in the anti-slavery movement. Eventually, she went on a lecture tour, giving speeches around the country in favor of abolition. Harper also published poems and essays about slavery and discrimination.

Harper believed strongly in the power of the vote. She was a supporter of the 15th Amendment and a founding member of the American Woman Suffrage Association. Harper pointed out that many white suffragists were concerned mainly with securing the vote for white women. At one suffrage convention, she said, “You white women speak here of rights. I speak of wrongs.”

Library of Congress, Washington, D.C.

Mary Church Terrell 

Mary Church Terrell was born in 1863 to parents who were formerly enslaved. After attending Oberlin College in Ohio, she became a civil rights activist. U.S. lawmakers had expanded rights for Black Americans after the Civil War (1861-1865), but by the 1890s, new laws restricted some of those rights. Terrell worked to get anti-discrimination laws passed. Her work extended into the 1950s, when she protested segregation laws in the southern United States.

Terrell came of age in an era when the Constitution had been amended to grant voting rights to Black men, but not Black women. Terrell challenged white suffragists to include Black women in their cause. In 1913, she and other Black suffragists picketed the White House in support of women’s suffrage.

A Landmark Event

Want to know more about the Seneca Falls Convention?

© Kean Collection—Archive Photos/Getty Images, © Hulton Archive—Archive Photos/Getty Images, Library of Congress, Washington, D.C., traveler1116—DigitalVision Vectors/Getty Images; Photo illustration Encyclopædia Britannica, Inc.

Lucretia Mott, Elizabeth Cady Stanton, and Frederick Douglass worked to get the Declaration of Sentiments ratified.

WORD OF THE DAY

enfranchise

PART OF SPEECH:

verb

Definition:

: to give (someone) the legal right to vote

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In Case You Missed It

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Can AI Tell How Old You Are?

Young girl sadly staring at her phone, being denied access to an app

Can AI Tell How Old You Are?

Instagram is testing a form of technology that’s designed to tell which users are younger than 18.

Young girl sadly staring at her phone, being denied access to an app

© JGI/Jamie Grill—Tetra Images/Getty Images

Is it possible to tell how old someone is based on their selfie? Instagram is betting that it is.

Instagram is testing out a form of technology designed to determine someone’s age by scanning their face. Certain users will be required to take a video selfie, and then Instagram will send a still image from the video to a company called Yoti. Yoti will use an artificial intelligence (AI) tool to study the person’s facial features. 

“When a new face comes along, [the technology] does a pixel-level analysis of that face and then spits out a number—the age estimation,” Julie Dawson of Yoti told CNN.

According to Yoti, the technology “learned” to estimate ages by scanning millions of images of faces. This increased its ability to recognize what makes a person look younger or older. 

Instagram decided to use the technology to help ensure that its teen users aren’t seeing inappropriate content. The company has been criticized in the past for not doing enough to protect its young users.

Instagram (which requires users to be at least 13) does ask for users’ birthdates when they register. And it blocks certain content for users who have indicated they are under 18. Now, users will be required to use Instagram’s new age verification system if the birthdate on their account shows they are under 18 and they change it to indicate they are older than 18.

Yoti’s technology won’t always be accurate, though. According to Yoti’s own data, its age estimate was off by an average of 1.91 years for female users under 18 whose skin tone is darker. Its average error for female users under 18 with lighter skin was 1.41 years. 

Privacy may be another concern, but Yoti says the videos and still images will be deleted once they are used.

Instagram is working on other ways to verify users’ ages. One of them is a language analysis tool. It’s designed to figure out how old a user is based on how they write.

Did You Know?

A young woman with computerized lines and calculations on and around her face

© america_stock/stock.adobe.com

Face recognition technology identifies a person from a photo or video by looking at patterns in the person’s face and making a map of them.

AI on the Big Screen

We use artificial intelligence every day. But in the movies, AI invades peoples’ lives even more than in real life. Check out some classic movies about the adventures of AI.

The Matrix

Imagine a world where everything we think is real is actually being controlled by machines. That’s the world of The Matrix.

Characters from The Matrix in a still from the movie

© Warner Bros.

The Matrix stars (from left to right) Harold Perrineau, Keanu Reeves, Carrie-Anne Moss, and Laurence Fishburne.

WALL-E

In this animated movie, all the humans have abandoned Earth in search of a new world. WALL-E, a robot that has been left behind, spends his days cleaning up the planet. How much can a robot learn? WALL-E develops emotions—and when he meets another robot, he falls in love. 

Two robots in a vehicle traveling past electronic billboards

© Disney/PIXAR

The robots WALL-E (right) and EVE go on an adventure.

2001: A Space Odyssey

Made in 1968, this film was set partly in the year 2001, which was “the future” back then! A crew of astronauts are flying on a spacecraft controlled by a computer named HAL 9000. After a while, HAL starts doing things that the astronauts don’t understand. Has the computer taken over?

A man appears to be inside a circular lens with a red light framing him

© 1968 Warner Bros. Entertainment/Metro-Goldwyn-Mayer Inc.

A computer called HAL (the light in this photo) starts doing things the astronauts don’t understand.

Is Truth Stranger Than Fiction?

Where can you explore computers, robots, space travel, alien encounters, and all the other ways—real and imagined—that science can affect us? Check out science fiction!

© Twentieth Century Fox

The Star Wars movies are a good example of science fiction in film.

WORD OF THE DAY

futuristic

PART OF SPEECH:
adjective
Definition:

: relating to or telling about events in the future

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