The United States has significantly increased its military presence near Venezuela, carrying out strikes on alleged drug ...

If the map of de la Cosa really was created later than 1500, perhaps the true earliest map of “America” is Martin Waldseemüller's world map. Created in 1507, it is the first map to depict the Western ...

In a paradox of global warming, thawing ice isn’t making Arctic waters easier to navigate. It makes them more dangerous.

A deep heat mass beneath the Appalachians appears to have started near a rift between Greenland and North America. Its slow southward journey reveals that ancient tectonic events still influence the ...

The Sargasso Sea is a patch of unusually calm water 590 miles east of Florida. Strong currents rush around its edges, but inside it's smooth.