As the saying goes, every rose has its thorn. But, what we call thorns are actually not thorns at all.
History can explain why plants and animals look the way they do today.
Plants are using wonderful and intriguing ways to defend themselves against predators.
Learn how acacias, ants and elephants work together to survive.
Every rose has it's "prickle"? Not quite the phrase we are used to hearing, but actually roses don't have thorns at all!
Early stone tools, like knives and scrapers, are easy for anthropologists to learn about because these items are still around. Even after two million years, a chipped stone tool is still going to be there when you dig it up.