Do you have blue eyes? We talked to experts to discover curious facts about baby blues, including whether your biological family is bigger than you ever imagined.

Radiation within the visible spectrum can appear black if it is low in power – more specifically, lower in power than its ...

For William Paley, such a mechanism argued for a supreme designer; for Darwin, the eye was a test case for natural selection ... that documents human efforts to understand the eye." ...

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 ...