Extremely hot weather has started to hit most of the United States, with temperatures set to peak over the weekend, meteorologists say.
The heatwave could affect about 200 million people in major cities like New York, Washington and Boston in the East Coast, and the Midwest region too.
In some places, temperatures could be close to or exceed 100F (38C). Parts of Canada are also being hit.
Experts link more frequent heatwaves in recent years to climate change.
Earlier this month, the US state of Alaska, part of which lies inside the Arctic Circle, registered record high temperatures.
Which areas are hit by the latest heatwave?
The heatwave is hitting an area stretching from the Central Plains of Colorado and Kansas, to the Great Lakes in the north-east.
Consider you plants, some shade and extra water is Good