ExxonMobil and agricultural employers are killing people in the summer heat.
The body is a cooling machine that runs on sweat. Sweat evaporates, core temperature drops, the loop runs fine — until the humidity locks the air and the sweat stops cooling anything. Then the internal temperature climbs past 104, the hypothalamus loses control, and the brain stops telling the organs what to do. The heart works harder and harder to push blood to the skin until it can’t keep up. The blood vessels leak, clotting goes haywire, and the kidneys shut down. That’s heatstroke. You’re dead before you hit the hospital. Heat already kills more Americans than floods, tornadoes, and hurricanes combined, and the baseline is moving under us.
Those of us who spend our lives outdoors in counties like Adams know the shape of it. The notebook on my bench goes back twelve years, and the first 90-degree day has slid from July into May. This year we hit 94 before the kids got out of school, and Sara’s classroom doesn’t have air conditioning. Mike came home last Tuesday with his shirt soaked through and a headache he couldn’t shake. The school board has been talking about cooling for three budget cycles. Nothing’s happened. The Adams County UW extension’s twelve-year phenology log documents the longer arc: ice-out on Petenwell has moved back by roughly a dozen days in a generation, the syrup run starts three weeks earlier than it did when the century turned, and mosquitoes appear in some Marches now instead of waiting for May. The spring heat wave that broke records from Georgia to New York this April didn’t end in April. It settled into the summer calendar and will hold through August. The Times-Reporter ran the county health department’s numbers last August — emergency-room visits for heat illness were climbing well above the ten-year baseline. The old folks who live alone in the farmhouses without central air, the ones who can’t afford to run a window unit because the electric bill already eats a quarter of their Social Security check — they’re the ones the ambulance picks up. In the cities, that heat is worst where asphalt and concrete hang onto it overnight. Trees can cut that city heat by half, though the shade doesn’t fall the same way on every block. Out here in Adams County, the problem is that there’s no shade at all where the work gets done.
The migrant workers in the potato fields are getting sick in rows where there’s no water and no mandatory break. I know a crew boss who sprayed a worker with a hose to cool him down because that was the only option on site. Federal occupational safety rules exempt agricultural workers from any nationwide heat standard. Some states have filled that gap. Wisconsin has not. The standard federalist defense holds that a farm schedule cannot be regulated like a factory shift because crop pace ignores the clock. The 104-degree collapse of a human nervous system obeys neither crop pace nor schedule, which is exactly why the state must draw a hard line. The guidance that gets handed out is the kind you write on a breakroom whiteboard: drink water, take a break when you can, watch for dizziness and nausea. It assumes the worker has the leverage to stop. It assumes the operator will pay for the lost hour. The harvest does not wait for either assumption.
Wendell Berry named the mentality of exploitation, which treats land, animal, and labor as disposable inputs and reads depletion as efficiency. You see it on the field-crew roster every July. Eric Schlosser traced how the industrial food supply chain externalizes risk by pushing it down to the hands in the dirt. The workers at the bottom absorb the lethal exposure. The operators at the top capture the yield. The farm crew that sends a hand into a heat index of 105 without a mandatory clock is the same crew that puts the crop on the shelf. The margin is built on a calculation that measures the cost of a lost worker against the value of a saved harvest. The arithmetic has an answer. The working-class-dignity rhetoric tells the crew that their labor builds the country, and the honor code means they don’t complain when the sun cooks the field and the humidity traps the heat. Honor gets recast as endurance. Endurance gets recast as silence. The silence shows up on a death certificate listed as natural causes when the mechanism was the temperature and the mechanism was the schedule.
None of this is an accident. The heat is worse because the planet is warmer, and the planet is warmer because the oil companies spent forty years making sure nobody did anything about it. Naomi Oreskes and Erik Conway documented the whole architecture in Merchants of Doubt — the same handful of physicists and PR firms that defended cigarettes pivoted to climate in the 1990s, and the goal was never to win the science. The goal was to produce enough public doubt to delay regulation, and they succeeded. Exxon’s own scientists understood the warming risk in the 1970s, and the company spent the next three decades funding think tanks and front groups that called it uncertain. That’s not my speculation. The documents are public. The names are in the documents. The company treated the future as a cost it could externalize onto the next generation, onto counties like mine, onto the men on the roofs and the kids in the classrooms. That heat is a business decision, repeated across decades, with a body count.
The same executives who greenlighted the “uncertainty” campaign are retired now with stock options and named chairs at policy schools. The people who are dying in the heat this summer don’t have stock options. They have a body that can’t cool itself when the wet-bulb temperature passes 95, and they have a country that let the oil companies run out the clock.
A rural infrastructure framework that actually protects the people running it would start at the field edge. It would put a work-to-rest ratio into state labor code, keyed to the heat index and enforceable by a state inspector who can shut a site down without a month of paperwork. It would require a cooled rest shelter on every job site larger than a half-section, and it would pay for the rest hour instead of making the crew eat it. It would treat a worker’s core temperature as the first line item on the ledger, not the last casualty the crew learns to absorb.
The heat is not an act of God. The global average temperature has risen roughly 1.2°C since the preindustrial baseline, and the local July heat indices in central Wisconsin have tracked that rise. It is a weather pattern we have measurably intensified through forty years of deliberate delay, and it is a risk we have deliberately left unmanaged for the people who make the food. The summer will get hotter from here. The notebook will keep filling up. The county will keep counting. And the blame stays right where it belongs — on the companies that chose denial over disclosure, on the employers who choose the harvest over the worker, and on the political class that let both of them do it. The county that still has a county treats the hand that feeds it as worth more than the crop it harvests.