Hordes of demonstrators began to converge in central London on Friday morning, intent on mocking U.S. President Donald Trump on his only full day of business with British leaders on what has been dubbed a "working visit" to the United Kingdom. 

2016 was a milestone year in the continued warming of the planet. From unstable agriculture to the drought in California to melting ice sheets to extreme weather events and heat waves, climate change has disrupted virtually every corner of the world.

After a hard-fought debate, voters in Britain decided the U.K. should leave the European Union in a historic referendum that toppled a prime minister and opened up a world of uncertainty.

An EgyptAir flight from Paris to Cairo carrying 66 people disappeared from radar early Thursday morning over the Mediterranean Sea.

Gunmen attacked a popular hotel in Mali's capital on Friday with guns and grenades, authorities and a witness said, taking scores of hostages.