Rosetta Finds Ingredients for Life in Comet 67P's Halo The findings support the theory that the building blocks for life were delivered to Earth with comets.
Tiny Predatory Vampires Dwelled in Ancient Seas Microfossil prey containing puncture holes were discovered in the Grand Canyon.
In a Surprise Discovery, Early Earth’s Atmosphere May Not Have Been Thicker Than Today’s "People will need to rewrite the textbooks."
Underwater Volcanoes May Have Transformed Earth From Icehouse to Greenhouse Before that, life could not have evolved.
Ancient Mummified Bacteria Point to Subterranean Origins of Life The discovery of fossilized bacteria in rock samples from deep beneath the ocean floor indicate that the very first life-forms arose from a rich soup of minerals concocted in hydrothermal vents.