See the amazing winning entries from winner from the Underwater Photographer of the Year featuring playful seals, inside the ...

Oxygen shaped the world as we know it. It’s why we hiccup and why frogs croak. It’s so good that some turtles have learned to suck it in using not just their nose and mouth, but also… another orifice.

Birds are most often found soaring through the air, perching on tree branches, or shuffling on the ground. Discover 11 types ...

RadarOnline.com can reveal Rod Stewart has sparked fears his lungs – and even his heart – could give out as he submits to punishing underwater drills and sprint training at 81, determined to defy age ...

You step into a story that asks whether a single avoidable choice can change everything. A Texas scuba instructor told investigators he had stayed awake for nearly 29 hours before a training dive ...

Now Playing | In the game, to be clear ...

Having lived in rainy Seattle during my formative years as a climber, I ended up climbing indoors a lot. I even worked in a climbing gym for several years, setting routes, teaching classes and ...

For invasive reptile hunters in Florida, there’s another predatory lizard on the radar. Nile monitors, native to Africa, are populating parts of the Sunshine State, and they can now be killed ...

These over-the-top moments sunk their perfectly manicured claws into our still-forming brains. A new docuseries is reexamining them.

Robert Croft, who has died aged 91, was a US Navy diving instructor whose record-breaking feats of deep diving in the 1960s ...

His derring-do and unusual lung capacity led him to make record-breaking dives of more than 200 feet into the Atlantic without wearing a scuba tank or fins.

One writer shares her transformative journey learning to freedive—and the best places around the world to give it a try.