Batty directions, heat-resistant coral and counting barnacles

Published: March 9, 2021, 10:48 p.m.

Science commentator Siouxsie Wiles joins Kathryn to talk about how fruit bats navigate through their sense of smell and large eyes, rather than echolocation. Researchers have discovered a cheap way of identifying corals that are more heat-resistant and could help regenerate damaged reefs. And want to know how long an object has been drifting at sea? Count the barnacles!