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On climate migration, trade wars, and a Pineapple Express

Current conditions: More than 4 feet of rain have fallen in Australia’s Queensland state since Saturday, triggering a flooding disaster • Parts of Los Angeles are under an air quality alert due to particle pollution • A large storm system will torment millions of Americans across the Plains and East Coast later this week.
On Saturday evening, President Trump signed orders placing 25% tariffs on all goods imported from Canada and Mexico, and a lower, 10% tariff on Canadian oil, natural gas, uranium, and other energy sources. Trump also imposed a 10% tariff on all goods imported from China. If the tariffs go into effect tomorrow as planned, they will affect nearly half of America’s imports and reshape some of the world’s most important energy and trading relationships. They could shrink the United States’ GDP by 0.4%, while increasing taxes by $830 per household, according to an analysis by the Tax Foundation, a center-right think tank. As Heatmap’s Robinson Meyer has reported, the tariffs will hurt a lot of people and businesses, including:
Climate change will wipe $1.47 trillion off of U.S. home values by 2055, according to a new report from First Street. Extreme weather is causing insurance costs to rise, while also changing the desirability of certain areas. This convergence “suggests there may be fundamental restructuring of home values across the U.S. in the coming decades,” with property values expected to fall across the country. Some statistics from the report:
55 million – Total number of Americans expected to voluntarily relocate to avoid climate risks by 2055.
5.2 million – Americans expected to do so this year.
12.8 million – Americans expected to relocate because of wildfire smoke particulate matter by 2055. Nearly 12 million will move because of flooding, 14.7 million because of extreme heat, and 11 million due to drought.
31% – increase in the cost of homeowners insurance since 2019.
22% – rise in inflation during the same time.
322% – expected increase in Miami’s insurance premiums by 2055. Florida’s premiums have already gone up by 47% in just five years due to intensifying hurricanes.
73% – share of Americans that consider climate risks when buying a home.
4,107 – neighborhoods currently classified as “climate resilient,” with low climate risks and stable insurance rates. These neighborhoods are expected to drive much of the population growth through 2055. However, high-risk areas with rising insurance premiums are also projected to grow until they reach a “tipping point” into population decline.
21,750 – “climate abandonment” neighborhoods that are seeing premiums go up and populations go down. These represent 26% of all neighborhoods.

In case you missed it: Employees with the U.S. Department of Agriculture were ordered to “archive and unpublish” agency web pages that reference climate change, Politico reported, citing an internal email. Any future mentions of climate change should be documented so they can be reviewed. The move could limit access to information about climate-smart agriculture programs, USDA climate hubs, and wildfire management. It is “reminiscent of moves made during the first Trump administration to remove references to climate change from federal government websites,” Politico noted.
An atmospheric river is bringing large amounts of precipitation to Northern and Central California. The “Pineapple Express” weather pattern – so named because it moves up from the tropical Pacific around Hawaii – could dump a month’s worth of rain on areas including Redding and San Francisco. AccuWeather is forecasting up to 8 inches of rainfall around Redding, where flooding is already underway. This storm will be followed quickly by another burst of moisture farther south toward charred Los Angeles. This might help ease some drought conditions but could also trigger mudslides in areas recently burned in devastating wildfires.

The American Automobile Association (AAA) is partnering with ChargePoint to give its 60 million members discounts at EV chargers. The announcement is short on details at the moment, but as Jo Borrás at Electrek said, “when the nation’s largest auto club is talking about EVs, it feels like we’re moving in the right direction.” ChargePoint has more than 30,000 charging stations across the country.
“If a North American trade war persists, it will qualify as one of the dumbest in history.”
–The editorial board of the conservative-learning Wall Street Journal
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France’s deadliest heat wave since 2003 killed more than 2,700 people — and possibly as many as 5,700.
More than 5,700 excess deaths were recorded in France during this summer’s record-breaking heat wave, the country’s health agency announced today. That makes the event — which ran, by the official reckoning, from June 17 to July 2 — the country’s deadliest heat wave in more than 20 years.
That’s in line with other estimates we’ve heard. EuroMOMO, a network of European public health agencies that track excess mortality, found that the continent saw more than 10,000 excess deaths during the same period. Roughly 90% of those victims were older than 65, it said. (France’s cohort seems similar: Adults older than 75 made up about two-thirds of the victims, the government said.)
These numbers are staggering — and much larger than some astute Heatmap readers might anticipate. If you read my colleague Jeva Lange’s piece on why it’s so hard to estimate heat deaths last week, she cited a much smaller estimate: Roughly 2,700 died in France during the most recent heat wave. That tally came from Christopher Callahan, an Indiana University scientist who studies climate change’s economic and social costs.
Why is there such a gap between the figures? I emailed Callahan to find out. He shared a few thoughts. First, he uses a different (and theoretically more rigorous) method than the French government: “Our approach uses a statistical relationship between temperature and mortality to explicitly quantify how many additional deaths are associated with a given day’s temperature,” he wrote. “France’s report of excess deaths is just based on how many more people died in late June compared to previous Junes - but we don’t know if those people died because of the heat or some other factor.” (Carbon Brief recently published a Q&A on these varying approaches.)
That might mean his estimate is right, in which case France has misidentified roughly nearly 3,000 deaths. But it could also mean his model, which is trained on data from 2004 to 2019, is “missing something,” he said, like a post-Covid change to public health risk. Last year, Callahan and his colleagues used a similar model to estimate deaths from France’s worst-ever heatwave, a 2003 episode that overwhelmed morgues and killed about 16,000 people. Even 23 years ago, global warming helped make that disaster larger than it needed to be: Some 6,000 of those deaths were due to climate change, their paper found.
Either estimate of the 2026 heat wave, of course, is shattering. As Jeva wrote, even the lower figure would mean the 2026 heat wave killed as many people as died in three years of French homicides. But the divergence in estimates tells us something else too: Even as climate change breaks records and alters our world, we’re never going to quite agree on where it ends and normal randomness begins.
The AI data center boom does not seem close to ending. Google’s parent company, Alphabet, announced its second quarter results this evening, and it beat Wall Street’s expectations, nearly quadrupling its profit on a year-over-year basis. Among the drivers: Its cloud business grew 82% compared to the same quarter last year. (As I’ve written, that rapid growth is helping to turn Alphabet and other hyperscalers into light industrial firms.)
The company’s AI bets seem to be paying off so far — so Google is now planning on spending even more on data centers, energy infrastructure and AI development this year than it once anticipated. It raised its estimates of 2026 capital expenditure to $195 billion to $205 billion, which is above earlier projections and twice as much as it spent in the same category last year. 2027 could be even bigger, it signaled. The company’s shares fell slightly on the news in after-hours trading, but from an energy and climate wonk perspective, the message is clear: For now, the AI demand surge transforming the power sector — and the real economy — continues to chug along.