Facial gestures can move this AI-motorized wheelchair

A new wheelchair may give people with severe mobility challenges another reason to smile about artificial intelligence—that grin might literally help them control their wheelchair.

When it comes to regrowing tails, neural stem cells are the key

Cut off a salamander's tail and, in a few weeks, a near-perfect replacement grows. Do the same to a lizard and a new tail will regrow, but it won't be the same as the original. By comparing tail regeneration between the two ...

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