A team of NASA-funded University of Northern Iowa researchers is exploring some of the deepest caves in the United States to ...

Whether you're drawn to geology, adventure, or simply the strange beauty of the underground, these seven caves are unforgettable stops that deserve a place on your U.S. travel map. Tucked beneath ...

Scientists are using these fluorescent features to understand how the caves formed and the conditions ... taking place underground that's telling us about how life can be supported," he explains.

Scientists are using these fluorescent features to understand how the caves formed and how life is supported in extreme ... the chemistry taking place underground that’s telling us about how life can ...

Ancient Homo sapiens may have benefitted from sunscreen, tailored clothes and the use of caves during the shifting ... predict how excursions might affect us in the future. "If such an event ...

Even with new polling showing significant disapproval among Americans of Donald Trump's handling of the economy, Trump's indifference to tanking the stock market did not waver. But when his ...

Check out 24 of the world’s must unusual landscapes — from the hellish Darvaza Gas Crater in Turkmenistan to the “snow ...

After a stock market meltdown, Donald Trump paused his tariffs on most nations for 90 days, but raised his tax rate on Chinese imports to 125 percent. Legendary journalist Geraldo Rivera joins MSNBC’s ...

ANN ARBOR—Ancient Homo sapiens may have benefitted from sunscreen, tailored clothes and the use of caves during the shifting ... how excursions might affect us in the future.

Trust us—when you experience it ... This one's a real doozy in more ways than one. To start with, these ice caves look like ...

Learn more about the Middle Island Sinkhole, an under water sinkhole with no oxygen.