For as long as humans have looked toward the stars, one question has remained unanswered: how did life begin? Scientists have searched for clues in Earth’s ancient rocks, oceans, and chemistry, but ...

Learning about the past is usually easier than predicting the future, but deciphering the earliest history of life on Earth seems to be an exception to the rule. Of course, we're not entirely in the ...

Researchers rebuilt long-extinct versions of a crucial enzyme that helps make nitrogen available to life, offering an unprecedented glimpse into Earth’s distant past. The breakthrough could aid the ...