This is a voyage of discovery everyone can make. THE NEW AGE OF EXPLORATION is a yearlong series of articles celebrating National Geographic at 125.

Just so we know whom to thank. THE NEW AGE OF EXPLORATION is a yearlong series of articles celebrating National Geographic at 125.

This story appears in the May 2013 issue of National Geographic magazine. Last October 22, at 9:29 a.m., a bell rang in the main office of Yuri Oganessian’s lab in Dubna, north of Moscow.

This story appears in the June 2013 issue of National Geographic magazine. The village chief, a wispy fellow with an easy smile and snowy muttonchops, came aboard James Cameron’s expedition ship ...