When did freshwater appear on Earth?
Geologists found chemical ratios in ancient minerals that suggested Earth had freshwater 550 million years after it formed.
Tag: early Earth
Why did a bunch of asteroids hit the Earth billions of years ago?
The first cells of life on Earth had a lot to contend with. Conditions were harsh and unpredictable. The air was thick with volcanic gases.…
Microbe lasagna tells us about what life was like billions of years ago
Sort of like a fossilized microbial lasagna, fossils called “stromatolites” are formed when layered communities of different types of…
We can learn about life on other planets by studying viruses
Scientists from the University of Zurich and the Max Planck Institute for Molecular Genetics, as well as the Icahn School of Medicine at…
Can life hiding near Yellowstone National Park’s hot springs tell us about the ancient Earth?
Yellowstone National Park is famous for its hot springs, geysers, wildlife, and incredible geology. While the area is popular among visitors…
Using Gas Bubbles in Lava to Predict Ancient Air Pressure
What was the weather like in New York last week? You can look it up on weather.com. What was it like on March 7, 1953, in the pre-internet…