HealthNew type of stem cell helps your fingers regenerate Shave off the very tip of your finger or toe and it should grow back. Now we know how. It's all got to do with some very special cells beneath your nails 51¶¯Âþ
LifeA biological basis for free will Our path through life isn't predetermined. Neuroscientist Peter Ulric Tse says he has identified the brain mechanism that lets us choose our fate Opinion