Fossils dating more than about 540 million years old are extremely rare. That's why a newly discovered ancient deposit is so valuable.
The new findings come after more than 10 years of observation.
New discovery could help scientists unearth more ancient microbial fossils and shed light on some big questions about early life on Earth.
Ice-buried canyons may have been formed by repeated floods as the world went into an ice age more than 2 million years ago.
Researchers examined some of the oldest rocks in western Greenland to probe the beginnings of today’s continents.
The water contains bacterialike shapes that researchers plan to test for DNA.
Some bubbles grow to be more than a quarter-mile across.