The extreme heatwave moved from the western part of the US to the east and Canada this week. Over the past few days, it has broken records for the highest temperature and raised high temperature alarms in many places, making it difficult for more than 100 million people in the US and Canada to experience extreme heat.

The extreme heatwave moved from the western part of the US to the east and Canada this week. Over the past few days, it has broken records for the highest temperature and raised high temperature alarms in many places, making it difficult for more than 100 million people in the US and Canada to experience extreme heat.