The first circumnavigation of the Earth, completed by the expedition led initially by Ferdinand Magellan and later by Juan ...

Fresh analysis of records for more than 30,000 species now points to a single thread that stitches Earth's bioregions ...

See a phenomenal photo of the world’s wonders from the July 2017 issue of National Geographic magazine.

Mathematical evidence indicates that our universe is flat, but it could be infinitely big, as well. You can figure out if an ...