Skip to content ↓

Topic

NASA

Download RSS feed: News Articles / In the Media / Audio

Displaying 406 - 420 of 432 news articles related to this topic.
Show:
Microbial mats growing in hot spring-fed streams, like these here in Yellowstone National Park, offer insights into the evolution of life on early Earth. As mineral-laden water flow over the mat, silica crystals grow, and the mat eventually turns into stone. The lithified mat is an analogue of conical stromatolites that are found in sedimentary rocks that are billions of years old.

A look back in time

By linking the odd geometry of bacterial growths to photosynthesis, researchers may have a new way to study Earth’s oldest fossils.

Read full story