"By following universal paralogs," says Kaçar, "we can connect the earliest steps of life on Earth to the tools of modern ...

If life exists elsewhere in the universe, researchers at the University of Washington are finding the clues on Earth to help ...

The new plot twist is that in order to keep enough nitrogen and phosphorus near its surface, a planet has to start out with ...

The Earth's magnetic field and oxygen evolved together over 540 million years, according to a major NASA study.

Ancient microbes tied to our earliest ancestors could use oxygen, reshaping ideas about how complex life began on Earth.

Scientists have spent decades cataloging life on Earth’s surface, from rainforest canopies to ocean trenches. But a growing body of research now shows that a vast, hidden biosphere thrives kilometers ...

Earth’s oxygen-rich atmosphere, the very thing that allows complex life to exist, may not last forever. Coupled biogeochemistry and climate simulations estimate that the planet’s breathable air could ...

As much as 45 oceans’ worth of hydrogen may be in Earth’s core, scientists reported, suggesting most of Earth’s water was ...

Ancient fossils are revealing unexpected chemical survivors, challenging long-held assumptions about how biological carbon is ...

Earth-like atmospheres require precise balances of nitrogen, oxygen, and CO₂, supported by long-term geological and biological processes. Most M-dwarf planets face atmospheric loss due to intense ...

IMAGE: An artistic representation of the potentially habitable planet Kepler 422-b (left), compared with Earth (right). CREDIT: Ph03nix1986 / Wikimedia Commons. Today, we have found over 4000 ...