The findings have the potential to resolve the longstanding "Muddle in the Middle" of human evolution, researchers said.

How do cells know what they should become as the body develops? Biological development depends crucially on spatial patterns: ...

About a billion years after the Earth formed, the first signs of life emerged. These were just single-celled microbes, but through billions of years of evolution, scientists think that one of these ...

A digital reconstruction of a million-year-old skull suggests humans may have diverged from our ancient ancestors 400,000 years earlier than previously thought and in Asia not Africa, a new study said ...

One important use of questioning is to facilitate student thinking about and discussion of science. Asking the right question at the right time can help a student clarify his or her thoughts, ...