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Articles on Evolution

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There’s a difference in the sex chromosomes between various mammals, such as the platypus compared to humans. Flickr/Darren Puttock

Did sex drive mammal evolution? How one species can become two

How new species are created is at the core of the theory of evolution. Mammals may be a good example of how sex chromosome change drove major groups apart.
An anaconda peers above and below the water. Did snakes evolve on land or underwater? Michael Lee (Flinders University & South Australian Museum)

Did snakes evolve from ancient sea serpents?

One of the enduring controversies in evolution is why snakes evolved their long, limbless bodies. A new study suggests snakes may have lost their legs at sea, before crawling ashore.

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