Articles on Evolution

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The talamanca hummingbird, or admirable hummingbird, is found in Costa Rica and Panama. Milan Zygmunt/

Not all genes are necessary for survival – these species dropped extra genetic baggage

How many genes do you really need? Are there any that we can lose? Researchers are now identifying species that have streamlined their genome to adapt to a particular lifestyle.
Darwin wondered: what if species change over time in response to their environment? Shutterstock

Curious Kids: how do scientists know evolution is real?

In science, we look at the evidence and try to find the theory that best explains it. And that's what happened when it came to figuring out evolution.
When is bigger better? Willyam Bradberry/

Climate change created today’s large crocodiles

Paleontologists created an evolutionary map of how croc body size changed over the last 200 million years – with some interesting implications for today's species.
Evolution has no final endpoint in mind. Uncle Leo/

Evolution doesn’t proceed in a straight line – so why draw it that way?

If you go by editorial cartoons and T-shirts, you might have the impression that evolution proceeds as an orderly march toward a preordained finish line. But that's not right at all.

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