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India’s giant heat wave is having ripple effects for the world’s food supply.

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For the past few days, a heat wave of mind-boggling scale and intensity has gripped South Asia. More than 1 billion people in India and Pakistan have endured daytime highs of 40 degrees Celsius, or 104 degrees Fahrenheit.

Delhi, the world’s second-largest city, has suffered through back-to-back days of 110-degree Fahrenheit heat. And Nawabshah, Pakistan—a city of nearly 230,000 people in the country’s desert south—came within half a degree of 50 degrees Celsius (122 degrees Fahrenheit), the temperature at which the human body starts to cook.

The heat wave has a horrific human cost. Dozens of people have died of heatstroke, according to reports from NPR. It will have a climate cost. Although only the richest Indians own air conditioners, electricity demand is so high that the country is planning to import additional coal to keep its power grid alive.

The heat wave will also have an economic cost—one that will ripple beyond the subcontinent. ... the world is suffering through a shortage of crucial commodities, including keystone cereal crops such as wheat. When Russia invaded Ukraine, it scrambled an already strained global wheat market—Russia is the world’s largest wheat exporter; Ukraine, the world’s sixth largest—and sent prices soaring. India, which has enjoyed five straight years of record wheat crops, jumped in and offered to export more than usual.

The heat wave has, for now, thrown those plans into doubt. Some Indian farmers have estimated that 10 to 15 percent of their crop has died, according to Monika Tothova, an economist at the Food and Agriculture Organization, a United Nations agency. But it’s too early to know exactly how the heat wave will shape the crop. ...

 

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