Maricopa County in Arizona has some of the hottest temperatures, but it has reduced the number of heat-related deaths.
What to know about the Canadian and US wildfires and their impact
Wildfires in Ontario have blanketed US and Canadian cities with dangerous smoke.
How these twins’ rare growth disorder could provide the key to preventing cancer
Researchers have found that people with Laron syndrome have a lower incidence of cancer than the wider population.
