Record-setting U.S. heat dome hits 143 million

Record-setting heat dome leaves 143 million people under extreme heat alerts The "brutal" heat wave is setting records for its intensity since at least 1950. Jacob Knutson,Andrew Freedman,Rebecca Falconer Axios

About 143 million people in the U.S. were under heat alerts Tuesday as a dangerous heat dome lingers over a major swath of the Midwest, South and Southwest.

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