After a baby is born, one of the first things proud parents do is count the infant's fingers and toes. What happens when those digits look fused or stuck together? Medically, that condition is known ...

Seeing your baby’s fingers or toes joined together or with an extra digit can feel unsettling at first. Syndactyly and polydactyly are conditions some babies are born with, and while they sound ...

Webbed feet and hands, of course, are a common trait of swimming animals from frogs to whales. In human swimmers, the invisible web of water allows them not to propel themselves faster, but to better ...