Michael Greenstone, 3M professor of environmental economics at MIT, shared his research findings on the mortality impact of rising temperatures in the U.S. and India at a PRB Policy Seminar. One extra day of 36 degree Celsius temperature in India is associated with a 1 percent annual mortality rate rise. In India's rural areas, there are few opportunities for adaptation. Hot days are associated with a sharp decline in rural agricultural wages and reduced access to credit.