National Geographic (@natgeo) October 2017

Mumbai residents prepared for incoming heavy monsoon rains last week. Torrential downpour is flooding India’s financial capital and disrupting transport. Mumbai International Airport, India’s second busiest, had to divert four flights and shut down operations for about a half an hour today, September 19, 2017. "Almost half of the world's population lives in areas affected by these monsoons, and even slight deviations from the normal monsoon pattern can have great impact," said Noah Diffenbaugh, an associate professor of earth and atmospheric sciences and interim director of the Purdue Climate Change Research Center. Diffenbaugh’s research group found that climate change could influence monsoon dynamics by decreasing summer precipitation and delaying the season’s start.