Much of India is reeling from a heat wave and severe drought conditions that have decimated crops, killed livestock and left at least 330 million Indians without enough water for their daily needs. (Rajesh Kumar Singh/AP) As India, the world’s second-most populous country, reels from an intense drought , the World Bank has released a new report finding that perhaps the most severe impact of a changing climate could be the effect on water supplies. The most startling finding? The report suggests that by 2050, an inadequate supply of water could knock down economic growth in some parts of the world a figure as high as 6 percent of GDP, “sending them into sustained negative growth.” Regions facing this risk — which can at least partly be averted by better water management, […]