World renowned scientist Stephen Hawking has given so much to the world of physics. Now he’s doing what he can for biology – and perhaps he will benefit from the experience himself in a big way. Hawking is testing the iBrain, a user-friendly brain scanner that can be worn all the time. At the very least the tests will help to improve the iBrain, but if things go exceedingly well, the device could help Hawking to speak.