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Ancient creatures survived arctic winters

Tropical turtle fossil found in Arctic

When did people first come to North America?

Most Indians linked to 'founding mothers'

Massive meat-eating dinosaurs discovered

Video

Today Show
  Sneak peek: Discovery's 7 part 'North America'

An exclusive look at Discovery’s epic seven part series “North America.”

NBCNews.com
  Oil may again alter Mideast's course

As energy production in North America climbs, NBC News' Chief Foreign Correspondent Richard Engel explores what it will mean to oil-producing countries in the Middle East.