Through our burning of fossil fuels and other activities, we humans have raised atmospheric carbon dioxide (CO₂) concentrations more than 40 percent in the last 150 years. This increase in CO₂, and in another greenhouse ...
Fossil evidence from the Tornillo Basin in West Texas and the Uinta Basin in Utah reveals two new species of omomyids—a family of small-bodied early primates from the Eocene epoch. The findings also clarify previously disputed ...
A tiny Nevada toad at the center of a legal battle over a geothermal power project has officially been declared an endangered species, after U.S. wildlife officials temporarily listed it on a rarely used emergency basis last ...
In a rare emergency move, the U.S government temporarily declared a northern Nevada toad endangered Monday, saying a geothermal power plant in the works could result in its extinction.
A massive release of greenhouse gases, likely triggered by volcanic activity, caused a period of extreme global warming known as the Paleocene-Eocene Thermal Maximum (PETM) about 56 million years ago. A new study now confirms ...
A new U of T study has discovered the oldest known cavities ever found in a mammal, the likely result of a diet that included eating fruit.
Up until a few weeks ago, the West Fork of the San Gabriel River was one of the most abundant wildlife habitats in Los Angeles County, a secluded and rugged area defined by its steep peaks, lush canyons and mixture of rare ...
How do big-game animals know where to migrate across hundreds of miles of vast Wyoming landscapes year after year?
Rock core samples from a period of warming millions of years ago indicate soils contributed to a rapid rise in atmospheric greenhouse gas and suggest modern climate models may overestimate Earth's ability to mitigate future ...
A small Cessna soared high above the Mojave Desert recently, its engine growling in the choppy morning air. As the aircraft skirted the mountains on the edge of Death Valley National Park, a clutch of passengers and environmentalists ...
