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Watch: The ‘world’s hottest month’ explained… in 60 seconds
Energy providers are warning Americans to be frugal with air-conditioning this weekend, as intense heat and increased demand could lead to blackouts.
Nearly 200 million Americans are under “dangerously hot conditions” alerts with temperatures expected to soar past 100F (38C) in several major cities.
The country’s biggest power grid declared a level one energy emergency alert.