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Life & Evolution

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composite image of various animals

BRAIN GAME  Despite being relatively large, a brown bear’s brain is sorely lacking in nerve cells, while a raccoon’s cat-sized brain is packed full, finds a new study that tallies these neurons in carnivores.

morpho dragonfly

BETTER BLUES  SN's article about the wings of this morpho dragonfly creating natural blue colors in a really complicated way was our top online story in 2017.

tick on a dino feather preserved in amber

DINE-O-SAUR  In this 99-million-year-old piece of amber, a tick trapped on a dinosaur feather provides rare evidence of the hosts these bloodsuckers preferred during the Cretaceous Period.

Life & Evolution

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