evolution evolution

Botanists say this plant is the fern equivalent of a human-lemur love child. Harry Roskam hide caption

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Harry Roskam

'Weird' Fern Shows The Power Of Interspecies Sex

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A blue whale is seen in Timor waters in an undated photo. The marine mammal buttresses Cope's rule, the notion that over the course of evolution, most animals tend to get bigger. Kiki Dethmers/AP hide caption

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Kiki Dethmers/AP

"Flavor is the most important ingredient at the core of what we are. It created us," John McQuaid writes in his book Tasty: The Art and Science of What We Eat. Getty Images hide caption

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Getty Images

'Tasty': How Flavor Helped Make Us Human

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Surprise! Not one of these things contains a single speck of blue pigment. Evan Leeson/Bob Peterson/lowjumpingfrog/Look Into My Eyes/Flickr hide caption

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Evan Leeson/Bob Peterson/lowjumpingfrog/Look Into My Eyes/Flickr

How Animals Hacked The Rainbow And Got Stumped On Blue

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Researchers raised two groups of walking, air-breathing Polypterus senegalus — one on land and one on the water. They discovered that each group was able to adapt to be best suited to its environment. A. Morin, E.M. Standen, T.Y. Du, H. Larsson/McGill University hide caption

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A. Morin, E.M. Standen, T.Y. Du, H. Larsson/McGill University