Gravity helps form the stars and planets and helps keep them in orbit. Yet, it can also cause these objects to collide. Explore the many ways gravity shapes—and reshapes—the universe.
More than likely with a good guess you could detect a heart-shaped leaf from one that's oval or narrow. But do you know how to recognize a leaf that has a lobed or divided shape? Learn how.
Go beyond petals and leaves! Learn how to identify a flower's stamen, anther, filament, stigma, and more with this illustrated look at the parts of a flower.
What can scientists know about a creature by examining its bones? And what can they only guess at? Show students with this hands-on activity.
Unicorns and dragons and Sasquatch, oh my! Continue the investigation of fantastic creatures with this mythological menagerie of books.
From fire-breathing dragons to magical unicorns, take a look at four legendary mythical creatures. Then find out what scientists think may have sparked belief in these imaginary animals.
You just might be surprised by how diverse and interdependent the living things around your school are. Investigate a patch of sidewalk, a grassy or wooded spot, or even someone's front yard.
If you could take a trip to a black hole, would you? Before you answer, take a peek at what you'd encounter. The trip certainly would qualify as adventure travel!
Can you curl your tongue? Do you have a "hitchhiker's thumb?" Investigate which of these four traits you share—and which of them are rare.
How are you like a chimpanzee? In what ways do you differ from a Neanderthal? Find out with this detailed, interactive look at humans and their closest cousins.