Stoychev’s endeavor is part of his quest to achieve a world record in completing the Oceans Seven challenge — a demanding series of seven open water channel swims. Download the free KHON2 app ...

The oceans, which form about 95% of the planet’s biosphere, also play a major role in regulating the climate by absorbing CO2 emissions and excess heat – but climate change is causing the oceans to ...

Andy Donaldson has completed the Oceans Seven challenge in record time. A Scottish swimmer has become the first person to swim the world's seven most dangerous channels in less than a year.

More than half the people on Earth live within 120 miles (193 kilometers) of the ocean, but even those who live nowhere near the sea are dependent on the massive saltwater ecosystem that covers ...