NASA has selected two Earth science missions for development, one focused on studying the atmosphere and the other on terrestrial ecosystems and ice.

NASA selects STRIVE and EDGE missions to advance Earth science research, improve atmospheric and ecosystem monitoring, and support environmental and safety planning.

In Arizona, nature is diverse and dramatic. The state's Tonto Natural Bridge State Park is home to the world's largest natural travertine bridge, where visitors can hike and explore its unparalleled ...

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 ...

From a distance, Biosphere 2 emerges from the cacti and creosote of the Sonoran desert like a gleaming oasis, a colony of glass and bright white structures. Despite being just outside Tucson, Arizona, ...

Earth froze over 717 million years ago. Ice crept down from the poles to the equator, and the dark subglacial seas suffocated ...

Hundreds of millions of Americans are presently besieged by a massive arctic blast and winter storm. Luckily for them, it ...

In 2007, the University of Arizona took over the management of Biosphere 2 from Columbia University which ran it from 1996 to 2003. Please click on the slide below to see this slideshow of the EDN ...