The world is heading to add 57 superhot days a year, but study indicates it could have been worse

The world is on track to add nearly two months of dangerous superhot days each year by the end of the century, with poorer small nations hit far more often than the biggest carbon-polluting countries, a study released Thursday found.

But efforts to curb emissions of heat-trapping gases that started 10 years ago with the Paris climate agreement have had a significant effect. Without them Earth would be heading to an additional 114 days a year of those deadly extra hot days, the same study found.

The international collection of climate scientists World Weather Attribution and the U.S.-based Climate Central teamed up to use computer simulations to calculate just how much of a difference the landmark accord has made in terms of one of the biggest climate effects on people: heat waves.

The report — which is not yet peer-reviewed but uses established techniques for climate attribution — calculated how