great blue hole

Here are 7 most spectacular sea caves in the world, there are caves visitors will have to wear dedicated diving suits, but there are also caves that only have tough legs that can

Most of the giant pits on Earth are made by human mining activities like Darvaza gas fires that burn for 45 years or the world's largest Kimberley diamond mine in South Africa.

Since launching into space in 1999, ASTER radiometer on Terra satellite of NASA's Aerospace Agency (NASA) captures 99% of the Earth's surface through 2.95 million images.