As Earth spins faster than it has in decades, atomic clocks are catching the difference, and shorter days are on the horizon.

Most people think a day on Earth is just the time it takes for the planet to make one full rotation on its axis, but that’s ...

Most people think they don’t get enough sleep, but compared to the animal kingdom, we’re wide awake. Some species spend nearly an entire day doing absolutely nothing, all for good reason.

In 1968, astronauts captured the first color photo of Earth rising over the Moon, viewed live by over 500 million people. This historic image is credited with inspiring the global environmental ...

Jackie Huggins returns to Carnarvorn Gorge – her mother’s Country, and one of six sites selected for the deep history digital ...

NASA retiree turned private astronaut Peggy Whitson splashed down safely in the Pacific early on Tuesday after her fifth trip to the International Space Station, joined by crewmates from India, Poland ...

Several planets stand still in the sky, Titan’s shadow transits Saturn, and Venus gives Taurus a second eye in the sky this week.

Tens of millions of outdoor workers in the country endure testing temperatures, but associated health risks still don’t ...

UN climate negotiations can stay on course without the US, but the multilateral process faces deeper challenges.

There have been many beautiful things written about Pope Francis’ legacy in the last few weeks. Various experts have, quite ...

Wikimedia Commons/Francine Schroeder photo for Smithsonian Institution The 1950 Smokey Bear Rescue On May 9, 1950, ...