People throw away plastic every day. Lots of it ends up in the ocean. It can harm marine wildlife there. Scientists are developing technology that helps collect plastic from the ocean. Cleaning Up Pla
Many people around the world don’t have clean water. Fog often goes unused by people. Fog nets can provide communities with clean, cheap water. Harvesting Fog for Water looks at the science behind the
Salt is the only rock people eat. The human body needs it to survive. But it does not need much. Your Body on Salt uncovers the nutritional benefits of salt, how it interacts with the body, and how to
People are adding carbon to the atmosphere. This causes Earth’s temperatures to warm. Scientists are developing fake trees that can capture and store carbon from the air. Capturing Carbon with Fake Tr
Surveillance is the close observation of a person or a group of people. Governments and organizations surveil people. Surveillance may help find and protect people from threats. But it can also be use
Sugar makes foods sweet. It is found naturally in many foods and is added to others. Too much sugar can cause health problems. Your Body on Sugar uncovers the nutritional benefits of sugar, how it int
The Dark Web is a part of the internet that is hidden and hard to access. It allows users to remain anonymous. Some people use the Dark Web because they fear for their safety. Others use the Dark Web
Most people around the world enjoy caffeine. This drug helps people feel awake. It can have some benefits, but it also has risks. Your Body on Caffeine uncovers the nutritional benefits of caffeine, i
Carbohydrates give the body energy. They are in many foods people eat each day. But some carbohydrates are healthier than others. Your Body on Carbohydrates uncovers the nutritional benefits of carboh
Dairy products come from a mammal’s milk. People around the world enjoy dairy. It has important nutrients. But some of the nutrients can be harmful in large amounts. And some people’s bodies cannot to
People use smartphones to connect with their friends, take photos and videos, browse the internet, and so much more. Inside Smartphones introduces readers to the uses of smartphones, the hardware and
Wearable technology, or wearables, put the power of a computer in a small piece of jewelry or clothing. They can check messages, listen to music, or even monitor health conditions. Inside Wearable Tec
During the American Civil War, escaped slaves found refuge near Union forts. They formed communities called contraband camps. The largest of these was the Grand Contraband Camp near Fort Monroe in Vir
In the 1950s, NASA relied on human computers. These skilled women did calculations by hand. While astronauts and their accomplishments were well known, human computers often worked behind the scenes.
Motown music emerged in the United States in the 1960s. It launched the careers of many African American musicians. Motown music shaped culture and society during the American civil rights movement. T
The March on Washington was the largest protest gathering in the American civil rights movement. Thousands of protesters marched on Washington, DC, in 1963. They demanded equal rights for African Amer
President George Washington and his wife enslaved more than 150 people in the mid-1700s. In 1796, one of their slaves escaped. Her name was Oney Judge. Oney Judge: Escape from Slavery and the Presiden
In 1960, six-year-old Ruby Bridges walked into William Frantz Elementary School in New Orleans, Louisiana. She became the first black student to attend the previously all-white school. This event pave
In 1931, nine black teenagers were arrested in Alabama. The young men were accused of crimes they did not commit, including rape. This unjust arrest led to years of imprisonment and trials for the you
Barbara Jordan’s work as an educator, a lawyer, and a politician helped shape the American civil rights movement. Barbara Jordan: Politician and Civil Rights Leaderexplores her legacy. Easy-to-read te
After World War I, many African Americans found a welcoming home in Paris while the fight for civil rights continued in the United States. African American soldiers, writers, performers, and activists
In 1954, segregation in public schools was banned. But the road to desegregate American schools was long and difficult. Activist Daisy Bates helped nine black students integrate Little Rock Central Hi
Anthems, or songs of hope and praise, can help support communities through difficult times. Throughout the 1900s, the song “Lift Every Voice and Sing” evolved into an anthem for black people in the Un
In the 1960s, African Americans protested for equal rights in the United States. In the 1970s, Catholics demanded equality in Northern Ireland. Catholics were influenced by the American civil rights m
Today, people use 3D printers to build houses, airplane parts, food, and even living tissue. Inside 3D Printers introduces readers to the uses of 3D printers, the hardware and software that make 3D pr
Some computers can do calculations in space, beat contestants at Jeopardy!, and create complex images and videos. Inside Computers introduces readers to the uses of computers, the hardware and softwar
Drones are hard at work in the sky and around the world. Some rescue swimmers in the ocean, while others deliver food and medical supplies to remote villages. Inside Dronesintroduces readers to the us
Today, GPS satellites orbit the earth. They send signals to GPS receivers in cars, smartphones, computers, and drones. Inside GPS introduces readers to the uses of GPS, the hardware and software that
Some robots can dance, perform acrobatic stunts, and even have conversations with their owners. Entertainment Robots introduces readers to examples of these robots, the challenges faced by their desig
Hobbyists and tinkerers design new robots for fun, to race with each other, and even to engage in robot battles. Hobby and Competition Robots introduces readers to examples of these robots, the challe
Today, robots are hard at work in hospitals around the world. Some simply help comfort patients or dispense medicine, while others are helping surgeons with complex operations. Medical Robots introduc
Robotic aircraft soar over battlefields, robotic ground vehicles disarm bombs, and robotic submarines search for underwater threats. Military Robots introduces readers to examples of these robots, the
From Earth orbit to the surface of Mars to the edge of the solar system, robots are helping push the boundaries of space travel. Space Robots introduces readers to examples of these robots, the challe
AT&T Stadium, home of the NFL’s Dallas Cowboys, is one of the newest and most advanced football stadiums in the country. Engineering AT&T Stadium discusses how the structure was designed, how workers
Mount Rushmore, a massive granite carving of four US presidents, is among the most famous landmarks in the United States. Engineering Mount Rushmore introduces readers to its designer, Gutzon Borglum,
One World Trade Center, an enormous skyscraper in New York City, was built in the wake of terrorist attacks that destroyed the original Twin Towers of the World Trade Center. Engineering One World Tra
The Eiffel Tower, build for a World’s Fair in 1889, has become a permanent symbol of the city of Paris, France. Engineering the Eiffel Tower introduces readers to its designer, Gustave Eiffel, shows h
The Golden Gate Bridge, spanning San Francisco Bay in California, has become an iconic symbol of the city of San Francisco. Engineering the Golden Gate Bridge discusses its designer, Joseph Strauss, e
The International Space Station, built in orbit over the course of several years, is the largest single spacecraft in history. Engineering the International Space Station examines the worldwide cooper
The New York City Subway System has been carrying passengers for more than a century. Engineering the NYC Subway System explores how designers drew up plans for the subway, how workers built the under
