“The system of death surveillance wasn’t designed for a climate-changed world.”
by Zoya Teirstein, Grist
Every week between May and October, the Maricopa County Department of Public Health in Arizona releases a heat morbidity report. The most recent report said that 180 people have succumbed to heat-associated illness in the county this year so far. But everyone agrees that number is off.
If previous years are any indication, the true number of heat-related deaths in Maricopa County, which includes Phoenix, is much higher: At the end of last summer, the county revised its initial reports upwards by a factor of five, ultimately reporting a sobering 425 heat-related deaths in total.

This lag plagues not just heat-related mortality reporting, but climate-related death data in general. It’s hard to get a full picture of the true number of mortalities connected to a given disaster in real-time. The full death toll often isn’t revealed until weeks, months, even years after the event occurs. And an unknown fraction of deaths often slide by undetected, never making it onto local and federal mortality spreadsheets at all. For example, a recent retrospective study found the number of people who died from exposure to hurricanes and tropical cyclones in the U.S. in the years between 1988 to 2019 was 13 times higher than the federal government’s official estimates.
Recent Posts
“Arrest Now, Ask Questions Later”: Why Did L.A. ICE Agents Arrest and Jail U.S. Citizen Andrea Velez?
July 3, 2025
Take Action Now “They didn’t have vests that said ICE or anything. Their cars didn’t have license plates. … Just because of the color of our…
Trump’s Big, Beautiful Bill Is Naked Class War
July 3, 2025
Take Action Now Trump’s “Big, Beautiful Bill” trades tax cuts on millionaires for the dissolution of society.By Hamilton Nolan, In These Times…
Mayor Mamdani’s First Day, A Zero Hour Conversation With Richard Wolff
July 2, 2025
Take Action Now If elected, what would Mayor Mamdani do on his first day in City Hall? How would a democratic socialist govern as a big-city mayor?……
The U.S. Is Funding A Bloodbath At Gaza Aid Centers
July 2, 2025
Take Action Now The admin just gave $30M to GHF, the organization at the center of charges that Israel is weaponizing assistance and shooting at…