Australia’s Yarrabubba Asteroid Impact Crater Is Oldest on Earth
Australia’s Yarrabubba Asteroid Impact Crater Is Oldest on Earth
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.
Australia’s Yarrabubba Asteroid Impact Crater Is Oldest on Earth
Australia’s Yarrabubba Asteroid Impact Crater Is Oldest on Earth

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.

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.

geochemistry
Fossilized Lipids Confirm <em>Dickinsonia</em> as One of the Earliest Animals
Fossilized Lipids Confirm Dickinsonia as One of the Earliest Animals
Ruth Williams | Sep 20, 2018
An analysis of organic material from 500-million-year-old fossils upholds the theory that the mysterious creatures were early forms of animal life.
Even in the Bronze Age, Humans Altered Soil Chemistry
Even in the Bronze Age, Humans Altered Soil Chemistry
Kerry Grens | Jun 13, 2018
Ancient bones from Ireland reveal that farming has changed nitrogen composition in land for the last 3,000 years.
Building Blocks of Life May Have Formed in Water Droplets
Building Blocks of Life May Have Formed in Water Droplets
Ashley Yeager | Oct 23, 2017
Reactions that generate fundamental components of the cell run smoothly in microdroplets, study shows.
RNA World 2.0
RNA World 2.0
Jef Akst | Feb 28, 2014
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.
 
Green Gold
Green Gold
Tracy Vence | Dec 31, 2013
It’s been decades since researchers confirmed the presence of gold in plants, but biogeochemical prospecting has yet to catch on.
Life Below the Seabed
Life Below the Seabed
Ruth Williams | Mar 14, 2013
Rock samples from deep within the Earth’s oceanic crust contain chemosynthetic microbial life.
Meteorite hints at life’s origins
Tia Ghose | Jun 9, 2011
As debate continues to swirl around arsenic-loving bacteria, a space rock yields new astrobiological clues.