Up To Date | Singing Mice; Six Fingered Hands; Dolphin Cliques

Neuroscientists found an on-off switch in mice brains that makes them sing; new research on the genetics of people who have six fingers on one hand and whether or not your brain could handle an extra robotic finger; and a look into how dolphins can be biased in who they associate with.Support the show: https://www.patreon.com/inquiringminds