Wild Things: Yeti Crabs, Guppies and Ravens- page 3 | Science | Smithsonian
(Yva Momatiuk & John Eastcott / Minden Pictures)

Wild Things: Yeti Crabs, Guppies and Ravens

Tree killers and the first beds ever round up this month in wildlife news

Bedding Down

mattress
(Image courtesy of Marion Bamford)
Early humans knew the importance of a good night’s sleep. Archaeologists led by the University of the Witwatersrand uncovered the oldest-known mattress, in a South African rock shelter. Made of sedges and grasses, the 77,000-year-old bedding held laurel leaves, which emit insect-killing chemicals, like a prehistoric mosquito net.

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