Physics experiments have changed the world irrevocably, altering our reality and enabling us to take gigantic leaps in technology. From ancient times to now, here's a look at some of the greatest ...

This image released by Neon shows Dr. Roy Walford, foreground, with candidates for the Biosphere 2 Project from the documentary "Spaceship Earth." (Peter Menzel/Neon via AP) During lockdown, have you ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. Astronauts perform so many out-of-this-world experiments on the ...

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 ...