It's hard to imagine―the molecules in the glass of water you just finished might have once been part of a water hole that dinosaurs drank from! In this fascinating new book about the water cycle,…
Move to another planet? Sounds interesting! In our imaginary spaceship, let's check out the planets in our solar system. Mercury is closest, but it has no air, and it's either sizzling hot or bitte…
A pygmy shrew is among the tiniest of mammals. A ladybug is even smaller. But in this book you will find small things you could not ordinarily see.
Explore the functions of levers, wheels, and pulleys, and learn how to lift a lion, pull a panda, and deliver a basket of bananas to a baboon birthday party!
In the Arctic, the summer ice is melting, making it hard for polar bears to survive. Why is the world getting warmer? The heat of the sun is trapped by the "greenhouse" gases that surround Earth--c…