A few years ago he enshrined this concept in a model that charts eye evolution in four stages, each defined not by physical structures but by the things that they allow animals to do. The first ...

When evolution skeptics want to attack Darwin's theory, they often point to the human eye. How could something so complex, they argue, have developed through random mutations and natural selection ...

An insect eye looks so different from a human eye that one would assume intuitively that this must have arisen quite differently in evolution. There was a separate sort of construction, which was ...

An insect eye looks so different from a human eye that one would assume intuitively that this must have arisen quite differently in evolution. There was a separate sort of construction ...