Grade 6

In 1957, the USSR sent its first man-made satellite into space. This began the Space Race between the USSR and the United States. The US quickly became the world leader in space exploration… Read More →

What if neuroscientists could look inside the human brain and watch individual brain cells send signals to one another? What if they could then control these brain cells to direct thoughts… Read More →

Imagine you are inside a dark closet. Everything around you looks black. You can't even see your own hands in front of your face. Why? Your hands are still there, but something important is… Read More →

One hundred bolts of lightning strike the earth every second. Each bolt has two or more electrical flashes moving quicker than the eye can see. In Lightning, find out about the powerful… Read More →

What causes thunderstorms and lightning? Where and why do hurricanes form? How are blizzards more dangerous than other snowstorms? To answer these questions, you’ll need to know about… Read More →

Hiram's father forbids violence. It's against their family's beliefs. Even so, Hiram has been sneaking out to the Woodrat Club, where bareknuckle fighters compete and shady deals go down.… Read More →

Enslaved African Americans longed for freedom, and that longing took many forms—including music. Drawing on biblical imagery, slave songs both expressed the sorrow of life in bondage and… Read More →

In 1938, Lily Renée Wilheim is a 14-year-old Jewish girl living in Vienna. Her days are filled with art and ballet. Then the Nazis march into Austria, and Lily's life is shattered overnight.… Read More →

In 2009 American composer and performer Lin-Manuel Miranda stood on a stage at the White House, about to perform a rap song at the White House Poetry Jam. When he explained that the song's… Read More →

Lionel Messi dominates soccer. Claiming every major trophy in soccer, Messi is one of the sport’s most decorated players. He has an Olympic gold medal, a World Cup win, seven Copa del Rey… Read More →

They’re some of the fiercest animals on the planet, but still in danger! Discover great cats in their natural habitats, where they have no natural predators. Lions are some of the finest… Read More →

Do you know why a 10-ton boat floats but a tiny pebble sinks? Or why a hot air balloon will rise, but when you inflate a balloon it drops to the ground? From Archimedes and Boyle to Pascal… Read More →

From the time she was a very young girl, Rachel Carson felt a bond with nature. Growing up in Pennsylvania, she spent hours exploring meadows and woods, dreaming of seeing the ocean. As… Read More →

Nature’s creatures can be ferocious! Lions and sharks leave many animals running scared. But some predators may be hunting beneath your feet or above your head—and you don’t know they’re… Read More →

You may know that Little Mix became instantly popular after winning The X Factor. But did you know that the group: • didn't know one other until they met on the TV show? • had one fan… Read More →

Bizarre creatures are floating around in our oceans—squishy, slimy, spiky-headed monsters. And they're not even grown up yet! These kids have to go through some drastic changes before they… Read More →

The world is changing for two girls in China in the 1970s. Da Qin—Big Piano—and her younger sister, Xiao Qin—Little Piano—live in the city of Wuhan with their parents. For decades, China's… Read More →

Little Wolf has been brushing his teeth without being growled at, he's been going to bed early, and he's been far too nice to his baby brother, Smellybreff. His parents, concerned they will… Read More →

The four March sisters—Meg, Jo, Beth, and Amy—face good times and bad while growing up in a small New England town. Their father is away, serving as a chaplain for the Union in the Civil War, Read More →

Life on Earth has existed for 3.5 billion years. In that time, 99.9 percent of the species that have ever lived have gone extinct. But a few have survived almost completely unchanged . . .… Read More →

Words that once sounded strange have made their way into how we talk to each other today. Things like virtual living, non-player characters, and simulated realities didn't just appear from… Read More →

Explore the obstacles humans would face if they were to try living on Mars. People have long dreamed of traveling to Mars to explore. That dream may soon become a reality. Scientists have… Read More →

It sounds like something from a science-fiction movie, but today, many scientists are exploring the possibility that humans could one day live on the planet Mars. This fascinating book,… Read More →