London, April 2: Examining how climate change could raise food insecurity risk across the world, researchers have projected that the flow of the Ganges river could more than double at 2 degrees Celsius global warming, with floods putting food production at risk in countries like India. “Climate change is expected to lead to more extremes of both heavy rainfall and drought, with different effects in different parts of the world,” said study co-author Richard Betts, Professor at the University of Exeter in Britain. “Such weather extremes can increase vulnerability to food insecurity,” Betts added.