Temperature and humidity based projections of a rapid rise in global heat stress exposure during the 21st century December 22, 2018 Coffell, E.D., R. Horton, and A. de Sherbinin. Temperature and humidity based projections of a rapid rise in global heat stress exposure during the 21st century. Environmental Research Letters. 13(1): https://doi.org/10.1088/1748-9326/aaa00e.