Frances Arnold's game-changing technique of "directed evolution" creates enzymes with unusual capabilities. Her own evolution made it possible.

A new simulation shows large amounts of hydrogen in our planet’s core. Scientists report on what they found in 290-million-year-old vomit. Plus, a comedic play and a 20-year neurology study explore ...

A Mexican man living in Arizona has been indicted by a federal grand jury on suspicion of passport and visa fraud after an old obituary tipped off investigators to an alleged fake identity scheme.

From 1941 to 1979, Iran was ruled by King Mohammad Reza Pahlavi, the Shah. On February 11, 1979, the Islamic Revolution swept the country. The government was replaced with an Islamic republic, which ...