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 ...

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 ...

Almost a century ago, the revolutionary idea of the biosphere gained a foothold in science. Defined as the collective activity of all life on Earth—the tapestry of actions of every microbe, plant, and ...

The UNESCO Man and the Biosphere (MAB) Program is a remarkable initiative carried out by resourceful, dedicated communities around the world who develop multi-pronged, sustainable ecosystems with ...

An Indonesian archipelago that’s home to three-fourths of Earth’s coral species, a stretch of Icelandic coast with 70% of the country’s plant life and an area along Angola’s Atlantic coast featuring ...

A new study maps the planetary boundary of "functional biosphere integrity" in spatial detail and over centuries. It finds that 60% of global land areas are now already outside the locally defined ...