ORACLE, Ariz. — Plopped in the Sonoran Desert, just outside Tucson, Ariz., sits a massive, multilevel greenhouse that's probably best known as the inspiration for a Pauly Shore movie. A slick, stepped ...

Add Yahoo as a preferred source to see more of our stories on Google. A new study on functional biosphere integrity, or the plant kingdom’s ability to co-regulate the state of the ecosystem, found ...

The recently spotted asteroid 2025 PN7 appears to be the source of the rumor mill about Earth's supposed second moon. Earth has several quasi-moons that get their name due to the fact that they ...

From the moon's formation to the Earth's core, some of the planet's biggest mysteries are still wide open Fascinating ...

Around 20,000 years ago, Earth was very, very cold. Global temperatures were 10 degrees Fahrenheit colder than they are today and most of North America was covered in ice. That ice was almost half a ...

Add Yahoo as a preferred source to see more of our stories on Google. Biosphere 2 is a research facility located near Tucson, Ariz. Katja Schulz/Flickr, CC BY From a distance, Biosphere 2 emerges from ...

Proto-Earth is the term used to describe the earliest days of our planet, the body from which our pale blue dot evolved. At this stage of its geological evolution, it likely existed only for a ...

After years as a professional research assistant at INSTAAR’s stable isotope lab, Valerie Morris estimates she’s processed more than 10 kilometers of ice from around the world. “You’ve done more ice ...