Prime Minister Boris Johnson says the action is needed to protect against the risk of new Covid strains.
Key maps and charts explain how the virus has spread around the world.
Five people died when their helicopter crashed in the Arizona tourist attraction in February 2018.
In the aftermath of last week's Capitol riots, Washington DC is preparing with extreme security measures.
Joe Biden's presidential Twitter account launches with no followers transferred from President Trump.
Several people are hurt as a bus plunges from an overpass in the Bronx on to an access road below.
German officials say some people have used Buchenwald mass graves as a toboggan run.
The US president-elect says the nationwide vaccine rollout so far has been "a dismal failure".
Others suspects include a state lawmaker, a firefighter, a florist and the son of a New York judge.
Mark Rutte's cabinet resigns after families were wrongly accused and many faced financial problems.
Many EU countries are receiving significantly fewer doses due to a change in manufacturing processes.
Dozens are thought to be killed and hundreds injured in an earthquake on the island of Sulawesi.
President Museveni's rival alleges the internet shutdown allows for rigging in the election count.
Johan "N0tail" Sundstein has earned more than $7.4m (£5.4m) in prize money to date.
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