Sheck Exley spent decades surviving depths that no other diver on Earth could withstand, turning danger into routine and rewriting the rules of the sport along the way. But when he dropped into the ...

He had spent decades rewriting the rules of deep diving, surviving narcosis, near-death rescues, and caves no human had ever ...

Cave diving combines the thrill of scuba diving and with the excitement of exploring a cave; it’s a challenging activity even for experienced explorers. At these four sites — some of the most popular ...

Kenny Broad knows you don't have to leave the planet to explore other worlds. Named National Geographic's 2011 Explorer of the Year and a National Geographic Emerging Explorer, he focuses on cave ...

If one thing’s clear from Jill Heinerth’s breathtaking new memoir on her life as a professional cave diver, it’s that this unusual career path requires serious mettle. Self portrait under the tannic ...

WAUNAKEE (WKOW) — Although the rescue of soccer team members in Thailand was more than 8,000 miles away, people here in southern Wisconsin are still in awe of the feat. "You have no idea the ...

(This program is no longer available for streaming.) Follow a fearless team of scientists as they venture into blue holes—underwater caves that formed during the last ice age, when sea level was ...