Mantis brains: How to see in 3D

Praying mantises are one of the only invertebrates that can see in 3D. Neuroscientist Jenny Read is using tiny 3D glasses to test their depth perception, while Ronny Rosner uncovers the nerve cells responsible for this so-called stereoscopic vision. In this film Ali Jennings goes to Newcastle University to meet the mantises and test out his own 3D skills.