Donald Trump has withdrawn an invitation for Canada to join his Board of Peace after a public spat with Mark Carney.

When the guns of the Second World War fell silent, Europe emerged devastated—physically, politically, and psychologically. In the ashes of catastrophe, ...

Donald Trump has disinvited Canadian Prime Minister Mark Carney from his Board of Peace after a war of words between the two ...

Mars may have been a "blue planet" with an ocean the size of today's Arctic Ocean, a new study suggests. New evidence of ...

Beneath Antarctica's Ross Ice Shelf lies one of the least measured oceans on Earth—a vast, dark cavity roughly twice the volume of the North Sea.