Fifth in the list is a desert of 930,000 square kilometers (360,000 square miles).
Unesco's Scientific, Educational and Cultural Organization recognized Botswana's Okavango Plain as a World Natural Heritage in 2014.
Unesco's Scientific, Educational and Cultural Organization has recognized the Art Stone Cave at Botswana's Tsodilo Hill as a World Cultural Heritage in 2001.
According to research by Dr. Jose Maria Gomez from the University of Granada, Spain, the new Meerkat mink are champions of the cruelty level in the animal world.
Miraculously, the small worm can build giant bird nests, sometimes several meters tall and weigh a ton, on the vast desert of Kalahari in Africa.