New research supports the idea that pulses of nutrients flushed from Devonian forests fueled ocean algae blooms that suffocated marine life.
Researchers and Aboriginal people are working to protect 3.5-billion-year-old stromatolite fossils in western Australia.
New discovery of ancient phosphorus-bearing minerals challenges assumptions about the way early life evolved.
Miniature aircraft, powered by light, might offer new ways to explore the atmosphere of Earth -- or other planets.
Ancient sediments reveal that shortly after emerging from the sea, microbial life may have adapted to survive in acidic lakes.
Astrophysicists can now piece together the moon's past, including the role of its fleeting magnetic field.