What is polydactyly? As David Tennant opens up about extra toe
What is polydactyly? As David Tennant opens up about extra toe - Children with polydactyly are born with one or more extra ...
Gecko feet inspire anti-slip shoe soles
Essentially, the tufts of tiny hairs on gecko feet get so close to the contours in walls and ceilings that electrons from the gecko hair molecules and electrons from the wall molecules interact with ...