Professional diver Andrew Ryzebol tells PEOPLE exclusively of his risky underwater explorations 200 feet beneath uncharted ice with nothing but a mask and fins Ontario Freedivers Andrew Ryzebol is a ...

Diving is fun until your oxygen tank runs out and you die, but this Poseidon Mk IV Discovery tank actually extends the time you can be underwater by recycling your carbon dioxide exhaust and turning ...

If you’ve dreamed of being able to hang out underwater without the tether of an oxygen tank, get ready for your dream to become reality. Scientists have created a crystalline material that can ...

SALT LAKE CITY – Most mornings, Velma and Helen are here in their bathing suits for water volleyball. But today, they're going bigger. While most seniors try to avoid being hooked up to an oxygen tank ...

Andrew Ryzebol is a professional ice diver from Canada who tells PEOPLE exclusively about his frigid adventures deep beneath the frozen surfaces of the Great Lakes he explores. The athlete shares the ...