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. Meanwhile, heatwaves and dry conditions have led to wildfires in many parts of Europe and North America.
With climate change raising ocean temperatures, rainfall and storm surges are becoming more intense.
These pictures represent some of the human costs, and humanitarian challenges, that we may see more and more often in the future.