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When Australia became separated from the other continents, its species evolved in isolation. And yet, some of the Australian animals evolved in exactly the same way as the other animals in the world. How?
Whether they're big or small, extinctions change the world. And while extinctions themselves are all about change, the study of extinction is all about uncertainty. Anything that lives can become extinct, but how do scientists know when it happens?
One kind of flatworm doesn't have a working mouth, because the algae that lives inside of it makes food for the worm. Symbiosis is crucial to the survival of many species. In fact, you're a symbiote yourself.
Leonardo Da Vinci explored the idea of the golden mean which is also found in one of the most famous number sequences known as the Fibonacci Sequence. Learn more about this sequence on Discovery Channel's "Assignment Discovery."
Evolution is fascinating because it attempts to answer one of the most basic human questions: Where did life, and human beings, come from? The theory of evolution proposes that life and humans arose through a natural process.
The public debate between Christian creationism and evolution has heated up once again in the United States. Learn about the different forms of Christian creationism and find out what's fueling the controversy.
How does intelligent design explain the origins of life? Does it fit the criteria of a scientific theory, or is it religious dogma in a scientific wrapper? In this article, we'll examine intelligent design and the controversy it has generated.