Why it's incredible: The lake is one of the largest on Earth, but it lies beneath several miles of ice. Lake Vostok is a giant lake in Antarctica that is similar in size to North America's Lake ...

Editor’s Note: Call to Earth is a CNN editorial series committed to reporting on the environmental challenges facing our planet, together with the solutions. Rolex’s Perpetual Planet ...

Are you planning a vacation to the United States but don’t know where to start? The US’s top cities are full of art, culture, and amazing attractions. You really can’t go wrong with any destination ...