In the early 1990s, eight people agreed to vanish from the world and live for two years inside a sealed glass habitat in the ...

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, ...

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 the Arizona desert, a vast glass structure sits far from cities and farmland. It was built to test an idea that once seemed urgent and uncertain. Could humans survive inside a closed world with no ...

If Earth's life survives the Anthropocene, it will eventually face another existential threat from space. As the Sun brightens with age, it will inevitably interfere with our planet's finicky carbon ...

Poynter says Biosphere 2 was to serve as a test ground for space colonization, a prototype of a self-sustaining human encampment that would someday be built on Mars — one that could grow its own food ...