Before so much as the first microbe existed, there had to be amino acids thought to have formed in one of the primordial oozes of early Earth. It was previously thought that lightning might have ...

Long before continents, oceans, or life Earth was a molten inferno. The Hadean Eon (4.6 to 4.0 billion years ago) was a time of endless meteor impacts, volcanic seas, and a choking atmosphere. This ...