A new study from The Earth Institute at Columbia University projects that heat-related fatalities could rise steeply in Manhattan by the 2020s as a result of a warming climate, and that in some worst-case scenarios, "by 90 percent or more by the 2080s." Researchers involved in the study, which will be published this week in Nature Climate Change, say that this is one of the most comprehensive city-specific studies conducted so far, with combined data from all seasons and application of multiple climate scenarios. "This serves as a reminder that heat events are one of the greatest hazards faced by urban populations around the globe," climate scientist and coauthor Radley Horton said.