geochemistry

The material, now part of an African mountain range, bolsters the idea that hydrothermal veins supported early forms of life.

Researchers report chemical and molecular signatures of microbial activity from millions of years ago in mineral samples from abandoned mines in Sweden and nearby countries.

A new study precisely dates the event to 2.229 billion years ago and suggests that it may have been responsible for ending an ice age.

An analysis of organic material from 500-million-year-old fossils upholds the theory that the mysterious creatures were early forms of animal life.

Ancient bones from Ireland reveal that farming has changed nitrogen composition in land for the last 3,000 years.

Reactions that generate fundamental components of the cell run smoothly in microdroplets, study shows.

Most scientists believe that ribonucleic acid played a key role in the origin of life on Earth, but the versatile molecule isn’t the whole story.
 

It’s been decades since researchers confirmed the presence of gold in plants, but biogeochemical prospecting has yet to catch on.

Rock samples from deep within the Earth’s oceanic crust contain chemosynthetic microbial life.

As debate continues to swirl around arsenic-loving bacteria, a space rock yields new astrobiological clues.