The one that every schoolchild learns about began in 1804, when Thomas Jefferson sent Meriwether Lewis and William Clark on their epic journey across North America ... sq mi MAPS: RYAN MORRIS ...

NORAD is once again tracking Santa's journey around the world on Christmas Eve using radar and satellite technology, ...

North America is the third largest continent in the world. It is located in the Northern Hemisphere. The north of the continent is within the Arctic Circle and the Tropic of Cancer passes through ...