Articles on Natural selection

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A brown basilisk missing both its entire left forearm and part of its right hind limb. Brian Hillen

3‑legged lizards can thrive against all odds, challenging assumptions about how evolution works in the wild

Most lizards probably don’t survive devastating injuries. But a new study documents 122 cases of limb loss across 58 species – these exceptions shine a new light on natural selection.
A small group of wild yellow-bellied marmots near the Rocky Mountain Biological Laboratory in Colorado. D.T. Blumstein

Wild marmots’ social networks reveal controversial evolutionary theory in action

Multilevel selection is a controversial concept originally proposed by Darwin. A new study found evidence for it in the wild in a group of marmots scientists have been observing for more than 60 years.

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