With a depth of around 2,199 metres, a cave in Georgia is so deep that nearly seven Eiffel Towers could fit inside.

Or sign-in if you have an account. Researchers worry that iodine deficiency is making a comeback as people ditch table salt for kosher, pink Himalayan and other salts ...

Colombia has created a first-of-its-kind territory meant to protect a group of Indigenous people living between the Caquetá ...