Gallery: A year of extremes
When it comes to weather, 2017 has been a year of extremes. As ongoing drought ravages large swathes of Africa and parts of the Americas, this year has been marked by heavy rains, tropical storms, and massive flooding and landslides, affecting millions of people.
Migration: Seeking solutions to a global crisis
It is estimated that more people are on the move across the world now than at any time since the second world war.