Row over US mobile phone 'cockroach backpack' app

A US company that has developed an "electronic backpack" that fits onto a cockroach allowing its movements to be controlled by a mobile phone app has defended itself against cruelty claims. The Backyard Brains company says that the device is intended to get children to be interested in neuroscience. A spokeswoman told the BBC that the device - being formally launched on Saturday - was not a gimmick. But critics say that the company's stance is "disingenuous".