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

00:01:03 Narwhals are whales with two teeth, and on the males one of those teeth is a really long tusk. A new study looks at how they use high-resolution echolocation to navigate under sea ice in the Arctic.

00:05:25 A new paper points out a potential new reservoir for finding antibiotics - the human gut.

00:11:59 Using data from the New Horizons probe, scientists have determined there is likely to be a large ocean deep below the heart shape on Pluto.

 

This episode contains traces of Stephen Hawking cautioning against being sedentary.