"Given how rare such evidence is due to [Earth's] geological recycling processes, this is a major breakthrough in understanding early Earth," Chris Kirkland of Curtin University in Australia ...

Meteorites then might have served as the cosmic Mayflowers that transported molecular seeds to Earth. In 1969, the Murchison meteorite that fell in Australia contained dozens of different amino ...

Earth was so cold at the time that the oceans were frozen all the way to the equator, and life only existed in the oceans and on continental shelves, study co-author Donnelly Archibald ...