The Sahara Desert is the answer we were looking for to today's Geo Quiz. The "Great Desert" or the world's largest hot desert, is comparatively smaller than Antarctica, considered a cold desert.

The fossils of two new dinosaurs were recovered from a region of the Sahara Desert, specifically the Elrhaz Formation along the western edge of the Tenere Desert in Niger in a place known as "Gadoufaoua".

Listen to our interview with University of Chicago paleontologist Paul Sereno who led the expedition to the Sahara in 2000.