BBC: The number of people affected by river flooding worldwide could nearly triple in the next 15 years, analysis shows.
Climate change and population growth are driving the increase, according to the World Resources Institute (WRI).
In the UK, about 76,000 people a year could be at risk of being affected by flooding if defences aren't improved, it says.
The yearly cost of damage to urban areas could reach more than 1bn.
The centre says this is the first public analysis of all world data...