Fluctuating oxygen levels may have accelerated evolution on Earth
Oxygen levels in the Earth’s atmosphere are likely to have “fluctuated wildly” one billion years ago.
This created conditions that could have accelerated the development of...
Why the Salton Sea in California is turning into toxic dust
The Salton Sea, California’s most polluted inland lake, has lost a third of its water in the last 25 years.
New research has determined a...
Saltier sea water may predict heavy summer rains in the Midwest
Farmers in the Midwest should care about the saltiness of ocean water thousands of miles from their fields, according to a team of scientists.
The...
Why is there a genetic risk for brain disorders? Neandertal DNA may offer answers
In a study from the University of Tartu, scientists found Neandertal DNA may provide answers to why there is a genetic risk for brain...
Dinosaur-killing asteroid triggered mega-earthquake lasted weeks to months
66 million years ago, a 10-kilometer asteroid hit Earth, triggering the extinction of the dinosaurs.
New evidence suggests that the Chicxulub impact also triggered an...
Ancient sharks appeared much earlier than previously thought
A handful of fossil teeth from a completely new species, uncovered from rock samples found in China, suggest jawed fish emerged sometime at the...
9 ways to prevent firearm tragedies near you
From schools and malls to city streets and suburban homes, incidents involving firearms have caused injury and death across America and ignited a national...
Scientists find tiny Triassic specimen is an early relative of pterosaurs
A new study of a tiny Triassic fossil reptile has revealed it to be a close relative of the species that would become pterosaurs.
A...
Dinosaur-killing asteroid triggered global tsunami, shows study
The miles-wide asteroid that struck Earth 66 million years ago wiped out nearly all the dinosaurs and roughly three-quarters of the planet’s plant and...
Vredefort crater asteroid was bigger than one that killed off dinosaurs
The impactor that formed the Vredefort crater, Earth’s largest, about two billion years ago, was probably much bigger than previously believed—and would have had...