The planet’s rotation fluctuates as it travels around the sun, and measurements suggest we’re losing more than a millisecond ...

President Trump and the first lady, Melania Trump, traveled today to Central Texas to visit sites along the Guadalupe River ...

Willis Carrier invented modern air conditioning in 1902—changing how we live, work, and build. This is the story of how cool became essential.

Armed with the world's largest digital camera, the Vera C. Rubin Observatory in Chile will take night-sky images that ...