Prairie dogs, vultures, grasshoppers, goldfinches, pocket gophers, and bison are some of the many...

How does a cloud form? When is the best time to see a rainbow in the sky? Why do ice cubes shrink...

Where did our universe come from? People have been trying to answer this question for thousand...

Moose, lemmings, owls, wolves, bumblebees, and grizzly bears are some of the many animals that ma...

Do you ever wonder why it seems like you are not moving even though you are standing on a planet ...

Have you ever wondered why things drop to the ground instead of float or fly? Or how a heavy sate...

Seals, otters, oysters, fish, pelicans, and sharks are a few of the animals that make up an ocean...

How do scientists predict the weather? What tools and instruments help them make forecasts? How f...

Beetles, toads, squirrels, owls, deer, and black bears are some of the many animals that make up ...

Outraged people claimed that Darwin's theory had made humans the relatives of monkeys. Scientists...

Did you know that both electricity and light move in waves, like water does? What does electricit...

Do you know why a 10-ton boat floats but a tiny pebble sinks? Or why a hot air balloon will rise,...