SoT 258: An Elephant Never Sleeps

Hosts: Ed Brown, Dr. Shayne Joseph, Penny Dumsday

00:01:05 By monitoring two wild elephants, researchers have found that elephants in the wild only have about two hours of sleep each night, and sometimes they go for days without sleep.

00:08:21 Archaea are single-celled organisms that are difficult to study, so scientists don't study them. "Because they don't study them, they don't know very much about them. Because they don't know very much about them, they don't know how best to study them."

00:24:46 How and when did modern humans come to Australia? We have evidence of human habitation dating back to 50,000 years, but no further. Now the genomes of 111 Indigenous Australians could give us some clues.

 

This episode may contain traces of Emre, asking science communicator and Planetary Society CEO Bill Nye a question about time travel.