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

Topics covered:

Fruitflies trained to count, the magnetic cells that help fish navigate, and the trade offs for having big brains. A fifth moon discovered orbiting Pluto, and the most complete skeleton of Australopithicus sediba is found. The trick used by cancer to spread through the bloodstream is identified, and the effects of gastric bypass surgery on gut bacteria.