The sun sets along 42nd Street as light smoke from wildfires in Canada begins to drift into the northeast on June 15, 2023, in New York City. Credit: Gary Hershorn / Getty

El Niño has arrived — and it will likely be the hottest in human history. It may already have made its presence felt in the April-May heat wave in Asia. The current heat waves in Mexico and the U.S. bear its imprint too.

In El Niño years, warmer seas in the equatorial Pacific raise global temperatures. The upcoming El Niño years will probably breach the 1.5 degrees Celsius global warming limit outlined by the Intergovernmental Panel on Climate Change, bringing renewed flurries of weather-related disasters, including floods, drought and wildfires.

Less immediately visible will be its economic effects: El Niño is set to aggravate the failure of the prevailing growth-based economic model, with calamitous results for the world’s poor.

A recent paper published in the journal Science by Earth system scientists Justin Mankin and Christopher Callahan studies the growth-suppressing effects of El Niño events. These are […]

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