Evolution

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man holding coco-de-mer nut

HUGE SEEDS  The iconic shape of a coco-de-mer nut that intrigues a traveler (shown) won’t show up on a tree. It’s evident only once the outer green husk is stripped off.

sperm whale skull

This skull belonged to an extinct species of pygmy sperm whale dubbed Nanokogia isthmia that once lived in an outer continental shelf habitat about 100 meters deep off the coast of Panama.

Phalaenopsis orchid

The shapes of the petals and lip of this Phalaenopsis orchid are governed by competition between two different protein complexes, a new study finds.

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