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 ...

This story appears in the November 2013 issue of National Geographic magazine ... and William Clark on their epic journey across North America. The other one is just beginning.

They are not the views of the National Geographic Society. "Charming, old New England culture of the sea present everywhere. Sheep graze, horses on the roads, an old lighthouse which is simply ...