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a sleeping Australian dragon

CATCHING Z’S While sleeping, this Australian dragon (Pogona vitticeps) shows brain wave patterns similar to those of slumbering birds and mammals. 

gelada monkey

MONKEY TALK  The vocalizations of gelada monkeys follow a mathematical principle seen in human language, shedding light on language evolution, new research suggests.

Geospiza fortis

FAMOUS FINCH  Medium ground finches (Geospiza fortis, shown) underwent a shift from big beaks to small ones following a drought. Most of that shift was traced to big- and small-beak variants of a gene called HMGA2.

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