Amyotrophic lateral sclerosis (ALS), often known as motor neurone disease, slowly kills off nerve cells in the brain and spinal cord, causing paralysis and eventually death. Right now, there's no known cure – but we might have just gotten closer to finding one. In a new study, scientists were able to reverse one of the biological abnormalities that ALS introduces in cells. It's important to note this has only been achieved for one form of the disease so far, and only in lab samples, rather than in actual human beings. Even with those caveats, though, it's a significant step forward...