Dartmouth College

Heat waves, intensified by climate change, have cost the global economy trillions of dollars in the last 30 years, a study published Friday found, with poor countries paying the steepest price.  

And those lopsided economic effects contribute to widening inequalities around the world, according to the research.     

Massive economic losses brought on by extreme heat induced by human-driven climate change are an issue now, not only in the distant future.