Billion-year-old rocks reveal traces of ancient life

How Ancient Teeth Reveal the Roots of Humankind

11 Types of Holes in Rocks, rocks

Sagittarius A* Black Hole Reveals Past Feast: Recent Study Finds

Fossil Site Reveals Day That Meteor Hit Earth and, Maybe, Wiped

Ancient humans may have worn shoes more than 100,000 years ago

Billion-year-old rocks reveal traces of ancient life - KTVZ

Earth Sciences

10 Types of Landscaping Rocks Everyone Should Know - Bob Vila, rocks

3.8 Billion-Year-Old Rocks Show That Water and Other Elements

4.6 billion-year-old meteorite could reveal how Earth formed

Complex ecosystems arrived early : Nature News

The Sun Was Dimmer When Earth Formed. How Did Life Emerge

Sagittarius A* Black Hole Reveals Past Feast: Recent Study Finds

Traces of ancient life found in 1.6-billion-year-old rocks in

The World's Newest National Park Protects 550-Million-Year-Old