How did life on Earth start? Researchers say it could've been billions and billions of lightning strikes unleashing the planet's phosphorus.
A new theory solves a problem with Charles Darwin's idea of early life evolving in "warm little ponds" despite the world being covered in oceans.
Exploding volcanoes, not an extraterrestrial impact, probably caused the Earth to suddenly cool about 13,000 years ago, researchers say.
"...an evolution of the mantle of the Earth could control an evolution of the atmosphere of the Earth, and possibly an evolution of life."
Earth's underground network of tectonic plates was in place more than 4 billion years ago—about a billion years earlier than scientists had thought.
"We think we have found the building blocks of life—the Lego set that led, ultimately, to the evolution of cells, animals, and plants."
New research moves closer to resolving some of the mystery of why ice ages end by establishing when that happens.
Early Earth 3.2 billion years ago was a world of vast oceans and submerged continents. The new findings could have implications for the origins of life.
The proto-Earth formed surprisingly quickly, new research shows. The finding ups the chance of finding water and life on other planets.
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