The true story of best friends Owen, a hippopotamus, and Mzee, a tortoise.

Raina wakes up one night with a terrible upset stomach. Her mom has one, too, so it's probably just a bug. Raina eventually returns to school, where she's dealing with the usual highs and lows: friends, not-friends, and classmates who think the school year is just one long gross-out session. It soon becomes clear that Raina's tummy trouble isn't going away... and it coincides with her worries about food, school, and changing friendships. What's going...

Raina Telgemeier's #1 New York Times bestselling, Eisner Award-winning graphic memoir based on her childhood! Raina just wants to be a normal sixth grader. But one night after Girl Scouts she trips and falls, severely injuring her two front teeth. What follows is a long and frustrating journey with on-again, off-again braces, surgery, embarrassing headgear, and even a retainer with fake teeth attached. And on top of all that, there's still more to...

Without the help of archeologists throughout time, very little would be known about some of the world's greatest civilizations. Archeology, with its carefully developed preservation techniques, is responsible for uncovering artifacts like the Greek sculptures and Native American weaponry we see in museums everyday. Be an "eyewitness" to the fascinating world of archeology. See a loaf of bread preserved for 2,000 years, the first humanskeleton ever

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Provides a speculative look ahead to the technological, environmental, and biological developments of the twenty-first century

Here is an exciting and informative guide to the vast, icy wastes at the ends of the earth. Superb color photographs of snowy mountains and frozen seas, rare animals and plants, and the teeming life on and under the ice offer a unique "eyewitness" view of our planet's polar wilderness. See a seal with a "trunk", a bear in a burrow, icebergs bigger than skyscrapers, 200-year-old snow goggles, and a pony's snowshoe. Learn about the northern and southern

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Meet Earth. Planet Awesome! And your awesome home! Actually, Earth is home to all the plants and all the animals in the solar system, including nearly eight billion people. Humans have accidentally moved Earth's climate change into the fast lane, and she need your help to put on the brakes. Earthlings need Earth, and Earth needs Earthlings, so let's save Earth together!

Newbery Honor and Boston Globe/Horn Book Honor recipient Jim Murphy has written numerous stories based on historical events, such as The Boys' War and The Great Fire. In An American Plague, he tells the story of the 1793 yellow fever epidemic. Bizarre medical practices of the time are discussed, as well as popular historical figures, such as George Washington and Benjamin Rush, who were involved in finding a cure for this horrific outbreak. Pat Bottino's...

Presents wildfires as neither good nor bad but as part of the endless cycle of change in forests and grasslands.