The Trump administration has introduced 50% tariffs on more goods from Canada, with an official claiming the measures are in response to the country's "continued discrimination".

Arctic winter sea ice is back in rapid decline after a slowdown in melting at the start of the decade, scientists have found.

The long-serving president of Nicaragua has declared the country will no longer hold elections.

A humanitarian worker is being assessed in a London hospital following potential exposure to Ebola, health officials say.

Jeff Bezos, the Amazon founder, has been approached to join a consortium which is in talks to buy a stake in Liverpool Football Club.

Arctic winter sea ice is back in rapid decline after a slowdown in melting at the start of the decade, scientists have found.