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Life & Evolution

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Koko the gorilla

R.I.P.  Koko, seen here showing Francine Patterson a flower, gained fame for learning sign language. The western lowland gorilla died June 19 at age 46.

a painted lady butterfly (Vanessa cardui) resting on vegetation

GOING THE DISTANCE  Painted ladies travel 12,000 km each year, farther than any known butterfly migration.

Asian common toad

The skin of the Asian common toad is laced with a deadly toxin. A new study finds that most predators in Madagascar that might eat the toad lack the genetic mutations necessary to make them immune to the toxin.

Life & Evolution

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