The Sahara is the largest non-polar desert in the world, with an area of about 3.55 million square miles, according to the CIA. Record-breaking heat:This is the hottest temperature ever recorded.

The geoglyphs in this 200 million-year-old desert have baffled scientists who are scratching their heads about where they've ...

It is a polar desert with the lowest recorded temperatures on Earth, according to Encyclopedia Britannica. At Earth’s other pole is another landmass of tundra, the world’s second-largest desert.