Record-breaking heatwave set to hit the US

A record-breaking heatwave is expected to affect over 220 million Americans this week, with dangerous temperatures in the East and Midwest, including 100°F in New York and Washington. The event is linked to a high-pressure system similar to Europe's deadly heatwave, which has caused 1,300 deaths and was attributed to climate change. A strong El Niño is also forecasted to drive warmer weather later in the year.