Retinal implant could add years to your eyesight

Scientists have been struggling to fight retinal degeneration in an elegant way. The most practical solution so far involves external devices that send wires to the back of your eyes. There might be a much more graceful approach before long, however....

Bill and Melinda Gates back an implant that could prevent HIV

You don't have to wait until after an infection to fight HIV. A technique known as pre-exposure prophylaxis has you taking preemptive medicine on a regular basis, greatly reducing the chances that HIV will take root in the first place. Needless to...

A bike accident left him paralyzed; electricity let him ride again

During a prerun of the Baja 1000, one of the world's most treacherous off-road races, Michael McClellan rode his dirt bike out to the front. He traversed the rough terrain of Mexico's northwest peninsula, eventually coming up hard on a washed-up brea...