Sign In or Create an Account.

By continuing, you agree to the Terms of Service and acknowledge our Privacy Policy

Climate

Last Summer Was the Hottest in 2,000 Years

On historical heat data, clean hydrogen, and solar geoengineering

Last Summer Was the Hottest in 2,000 Years
Heatmap Illustration/Getty Images

Current conditions: Wildfires continue to burn out of control in western Canada • An early season heat wave will bring record high temperatures to parts of Florida • One in eight Europeans now live in an area at risk of flooding.

THE TOP FIVE

1. Study: Last summer was the hottest in 2,000 years

We already know that last summer was the hottest “on record” – but those records only really go back to the 1850s or so. A new study published in the journal Nature looks further into the past and concludes that last summer was the warmest in some 2,000 years in the Northern Hemisphere. To reach this conclusion, researchers examined thousands of tree rings, which offer clues about a year’s temperature and moisture levels. The tree ring data suggests last summer was about 4 degrees Fahrenheit warmer than the average temperature of the years 1 AD to 1890 AD. The study warns that summer 2024 could be even warmer than 2023.

A separate study out yesterday concluded that Southeast Asia’s intense April heat wave was fueled by man-caused climate change. In the Philippines, for example, a 15-day heat wave pushed the heat index to 113 degrees Fahrenheit, disrupting daily life and forcing many schools to close. This extreme weather would have been “impossible” without climate change, the study found.

2. House Democrats launch probe into Trump’s meeting with Big Oil execs

House Democrats have launched an investigation into a recent Mar-a-Lago dinner where former President Donald Trump reportedly asked Big Oil bosses to put $1 billion toward his 2024 presidential campaign and promised to roll back some environmental rules should he win back the White House. The House oversight committee sent letters to oil executives from Cheniere Energy, Chesapeake Energy, Chevron, Continental Resources, EQT Corporation, ExxonMobil, Occidental Petroleum, Venture Global and the American Petroleum Institute. They want the companies to list who attended the meeting, provide copies of any documents distributed, describe any policies that were discussed, and disclose any contributions made to Trump’s campaign during or after the dinner, according toThe Washington Post. The top Democrat on the committee, Rep. Jamie Raskin, gave the executives a deadline of May 27 to turn over information, but the committee’s investigative powers are limited by the GOP’s control of the House. “If the oil companies decline to turn over the information, Democrats will not be able to subpoena the firms, stymying their investigation,” explained the Post.

3. Trump chides Biden on new Chinese EV tariffs

President Biden confirmed yesterday that he is imposing a 100% tariff on Chinese-made electric vehicles, as well as tariff increases on other clean energy technologies including lithium batteries, solar cells, and critical minerals. Former President Trump, speaking from outside the New York courtroom where his hush money trial is taking place, said: “Where have they been for three-and-a-half years? They should have done it a long time ago.”

There is no equivalence between Biden’ tariffs and the 10% across the board tariff on all imported goods from all countries that Trump has proposed, wrote Heatmap’s Robinson Meyer. “Biden’s new tariffs focus on certain strategic sectors that American officials believe the country must cultivate to stay at the technological frontier, coupled with pre-existing subsidies meant to spur domestic production of those goods. Some of the tariffs only kick in beginning in 2026 — far enough in the future, policymakers hope, for the market to prepare. Trump’s tariffs, meanwhile, would intentionally and chaotically hike prices.”

Get Heatmap AM directly in your inbox every morning:

* indicates required
  • 4. DOE offers Plug Power $1.66 billion conditional loan for green hydrogen plants

    The Department of Energy yesterday offered Plug Power a conditional commitment of $1.66 billion in loan guarantees to build up to six clean hydrogen plants that use the company’s electrolyzer technology. The hydrogen would “power fuel cell-electric vehicles used in the material handling, transportation, and industrial sectors, resulting in an estimated 84% reduction in greenhouse gas emissions compared to conventional hydrogen production,” the DOE announcement said. Most hydrogen production uses fossil fuels to run an electrolyzer that splits water into hydrogen and oxygen. But clean hydrogen relies on electrolyzers powered by renewable sources – or natural gas with carbon capture. The Biden administration sees clean hydrogen as a key part of its push to decarbonize heavy industry. The deal isn’t done yet – Plug will have to prove its projects will benefit local communities and “satisfy certain technical, legal, environmental, and financial conditions” before the loan goes ahead. But the news sent Plug’s stock soaring nonetheless.

    5. California officials pause solar geoengineering study over safety concerns

    In case you missed it earlier this week (I did!), officials in California have ordered researchers to stop using an aerosol sprayer to test a potential solar geoengineering process for cooling the planet, The New York Timesreported. The Cloud Aerosol Research Instrument, or CARI, sits on the flight deck of the Hornet, a decommissioned aircraft carrier in Alameda, California. It sprays sea salt aerosol particles into the air, a process that could one day be used to brighten clouds and reflect the sun’s rays. This experiment, which began in early April, marked the first time such a device had been tested outdoors in the U.S. But the city of Alameda told the scientists to stop their research until the health and environmental impacts of the experiment can be evaluated. “The city is evaluating the chemical compounds in the spray to determine if they are a hazard either inhaled in aerosol form by humans and animals, or landing on the ground or in the bay,” city officials said.

    THE KICKER

    Police in the U.K. could soon carry “Ghostbusters-style devices” that use electromagnetic rays to stop e-bike engines if a rider is suspected of being involved in a crime.

    Yellow

    You’re out of free articles.

    Subscribe today to experience Heatmap’s expert analysis 
of climate change, clean energy, and sustainability.
    To continue reading
    Create a free account or sign in to unlock more free articles.
    or
    Please enter an email address
    By continuing, you agree to the Terms of Service and acknowledge our Privacy Policy
    Carbon capture and pollution.
    Heatmap Illustration/Getty Images

    When Trump enters the Oval Office again in January, there are some climate change-related programs he could roll back or revise immediately, some that could take years to dismantle, and some that may well be beyond his reach. And then there’s carbon capture and storage.

    For all the new regulations and funding the Biden administration issued to reduce emissions and advance the clean energy economy over the past four years, it did little to update the regulatory environment for carbon capture and storage. The Treasury Department never clarified how the changes to the 45Q tax credit for carbon capture under the Inflation Reduction Act affect eligibility. The Department of Transportation has not published its proposal for new safety rules for pipelines that transport carbon dioxide. And the Environmental Protection Agency has yet to determine whether it will give Texas permission to regulate its own carbon dioxide storage wells, a scenario that some of the state’s own representatives advise against.

    Keep reading...Show less
    Blue
    Economy

    Trump’s Tariff Threats Will Soon Be Tested

    What he wants them to do is one thing. What they’ll actually do is far less certain.

    Donald Trump.
    Heatmap Illustration/Getty Images

    Donald Trump believes that tariffs have almost magical power to bring prosperity; as he said last month, “To me, the world’s most beautiful word in the dictionary is tariffs. It’s my favorite word.” In case anyone doubted his sincerity, before Thanksgiving he announced his intention to impose 25% tariffs on everything coming from Canada and Mexico, and an additional 10% tariff on all Chinese goods.

    This is just the beginning. If the trade war he launched in his first term was haphazard and accomplished very little except costing Americans money, in his second term he plans to go much further. And the effects of these on clean energy and climate change will be anything but straightforward.

    Keep reading...Show less
    Blue
    Electric Vehicles

    The New Electric Cars Are Boring, and That’s Okay

    Give the people what they want — big, family-friendly EVs.

    Boredom and EVs.
    Heatmap Illustration/Getty Images, Apple

    The star of this year’s Los Angeles Auto Show was the Hyundai Ioniq 9, a rounded-off colossus of an EV that puts Hyundai’s signature EV styling on a three-row SUV cavernous enough to carry seven.

    I was reminded of two years ago, when Hyundai stole the L.A. show with a different EV: The reveal of Ioniq 6, its “streamliner” aerodynamic sedan that looked like nothing else on the market. By comparison, Ioniq 9 is a little more banal. It’s a crucial vehicle that will occupy the large end of Hyundai's excellent and growing lineup of electric cars, and one that may sell in impressive numbers to large families that want to go electric. Even with all the sleek touches, though, it’s not quite interesting. But it is big, and at this moment in electric vehicles, big is what’s in.

    Keep reading...Show less
    Green