World's Biggest Non Polar Desert

World's Biggest Non Polar Desert is Sahara. Extreme Temperature, Rare Rain Fall, ocean of sand, spreading over more than 8,400,000 Square Kilometere. it's area is touching these Countries Boundry: Morocco, Algeria, Libya, Mali, Mauritania, Nigeria, Sudan,Tunisia, Egypt, Chad. The Living Condition in Sahara is so Tough that it is beyond imagination to live here for any animal or human kind. But this is miracle of Nature that people and some special featured animal can live here.