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Our in-depth course on the science of evolution.

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A browsable archive of articles, tutorials, interactive investigations and more.

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			Why the Y is here to stay - May, 2014 The Y chromosome is finally getting the respect it deserves. Since the early 1900s, we've known that the Y chromosome is responsible for making males-XX embryos develop into girls and XY embryos develop into boys—but the Y was thought to do little else. After all, at just one quarter the length of the X chromosome, the Y is relatively puny. Biologists hypothesized that the few genes it does carry contribute to processes like sperm production and testes development by helping turn on and off other genes. In fact, the Y had such a bad rap that many researchers suggested that it was on its way to evolutionary extinction. However, now, new research suggests that the Y chromosome is here to stay. Its function goes far beyond triggering maleness... Read the rest of the story | See the Evo in the News archive

How boogieing birds evolved: The work of Kim Bostwick When ornithologist Kim Bostwick goes hunting with her binoculars, she's not just looking for birds; she's looking for untold evolutionary stories.		CSI: Olduvai Gorge. The work of Jackson Njau Follow paleoanthropologist Jackson Njau as he examines fossil evidence for clues of crocodile predation on early hominids.
Evo Connection slide sets This series of short slide sets explain several basic biology topics in evolutionary terms. Each set includes notes to help you present every slide.		A fisheye view of the tree of life Explore our interactive fish evolutionary tree to learn about amazing innovations that have evolved in the different lineages.