Formed after volcanic activity, the underground caves periodically hosted early humans and their livestock in Saudi Arabia, facilitating cultural exchange
Alaska is nicknamed "The Great Land," and for good reason: it is wild, rugged and expansive. In a series of articles, Smithsonian magazine explores the history, culture and natural wonders of the 49th state.
These ten misconceptions underplay how much we have altered the global environment and undermine the new perspective we need to deal with a drastically changed world