The research looks at 42 years of water patterns in the world’s largest cities by population. The report says, “Many cities experience “whiplash”; droughts that dry up wat

A new report has revealed how the 100 most populated cities globally are becoming increasingly exposed to flooding and drought.

The weather in some of the world's most densely populated cities is swinging from droughts to floods and back again as rising temperatures play havoc with the global water cycle, a study commissioned by the charity WaterAid showed on Wednesday.