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 ...

A new study led by researchers at the Earth-Life Science Institute (ELSI) at Institute of Science Tokyo challenges a long-standing assumption about Earth's most extreme ice ages. Using numerical ...

COLORADO SPRINGS — Some NASA Earth science missions have been told to prepare termination plans given the potential for major budget cuts in the agency’s overall science activities. Rep. George ...

The study of Earth science isn’t just for students who are interested in how our planet works. It’s also for those who are passionate about addressing urgent global challenges such as climate change, ...

Calling all budding environmentalists, space enthusiasts, and Earth-bound innovators! Science Friday is excited to offer our Down To Earth program—a free educational experience designed to ignite a ...