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Climate

The World’s Most Polluted Countries

On air quality, Ford’s pivot, and solar geoengineering

The World’s Most Polluted Countries
Heatmap Illustration/Getty Images

Current conditions: Flash floods inundated parts of northern Iraq • Fire weather watches are in effect across several states, from Iowa to Maryland • Today marks the official start of spring.

THE TOP FIVE

1. Just 7 countries met WHO pollution limits in 2023

A region’s air should contain no more than 5 micrograms per cubic meter of the dangerous pollutant known as PM2.5, according to World Health Organization recommendations. In Bangladesh last year, the average concentration was 79.9 micrograms, making it the most polluted country in the world. Pakistan, India, Tajikistan, and Burkina Faso also had alarmingly high levels of PM2.5, which comes primarily from burning fossil fuels and is linked to 4 million premature deaths every year. The findings come from Swiss company IQAir, which uses 30,000 air quality monitors to understand pollution levels across the world. “The number of countries and regions with air quality monitoring has steadily increased over the past six years,” the company said in a press release.

IQAir

IQAir

In 2023 just seven countries had air quality that met the WHO guidelines: Australia, Estonia, Finland, Grenada, Iceland, Mauritius, and New Zealand. Average PM2.5 concentration across the U.S. was 9.1 micrograms, and Columbus, Ohio, was the most polluted major city in America.

2. DOE expects geothermal boom by 2050

A report from the Department of Energy projects geothermal energy deployment in the U.S. will grow dramatically by 2050, so long as developers can bring down costs. The DOE says geothermal could account for up to a third of the additional clean energy the country will need by 2050 to hit President Biden’s emissions targets and meet growing electricity demand, E&E News explained. Geothermal energy harnesses the heat from beneath the Earth’s surface for around-the-clock clean energy. Innovations in drilling technology are expected to bring the price of geothermal power down from $100 per megawatt-hour to as low as $60 per megawatt-hour by 2030, which would put it roughly in line with other energy sources, the DOE said. And new geothermal sites will need to be tapped: The report said 18 states will likely have geothermal operations by 2050, up from seven now.

3. Report: Ford pivoting to small EVs

Ford is reportedly “pivoting” from big electric vehicles to smaller, cheaper EVs in an attempt to keep up with Chinese manufacturers like BYD. Bloomberg reported the company has put together a team to work on a new electric platform for its small EVs, with the first vehicle slated to arrive in 2026 and cost around $25,000. “Plans for an electric three-row SUV have been delayed,” Bloomberg added.

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  • 4. Saudi Aramco CEO says fossil fuel phase out is a ‘fantasy’

    In case you were wondering how things are going at CERAWeek, the big oil and gas conference taking place in Houston this week, Reuters reported that “top oil executives took to the stage … to vocally oppose calls for a quick move away from fossil fuels.” “We should abandon the fantasy of phasing out oil and gas, and instead invest in them adequately,” said Amin Nasser, CEO of Saudi Aramco. His remarks were reportedly met with applause and echoed by leaders from Shell, Petrobras, and Exxon Mobil. Petrobras CEO Jean Paul Prates warned rushing the energy transition will create a “crisis that we will never forget.” Meg O’Neill, CEO of Woodside Energy, said the debate had become too “emotional,” and claimed the market for clean fuel technologies is some decades away. U.S. Energy Secretary Jennifer Granholm pushed back, pointing to projections showing oil and gas peaking demand by 2030, and called the transition “an undeniable, inevitable, and necessary realignment of the world’s energy system.”

    5. Harvard pulls the plug on solar geoengineering experiment

    Researchers at Harvard have abandoned a plan to conduct what would have been one of the first solar geoengineering experiments in the stratosphere. Solar geoengineering – also known as “solar radiation management” – involves reflecting sunlight back into space by spraying aerosols into the stratosphere in an attempt to cool temperatures on Earth. It has long been a somewhat fringe idea among scientific circles – a sort of option of last resort – but interest has grown as global emissions climb and the Earth gets hotter. While most solar geoengineering research has happened in labs, Harvard’s Stratospheric Controlled Perturbation Experiment (SCoPEx) was going to launch a high-altitude balloon to release aerosols and observe their behavior. But the project was controversial from the start and encountered multiple delays. In the end its lead investigator walked away. “The platform developed for SCoPEx is expected to be repurposed for basic scientific research in the stratosphere unrelated to solar geoengineering,” the university said in a statement.

    THE KICKER

    Penn State University/YouTube

    A new study suggests using virtual reality to depict worst-case environmental scenarios like mass coral bleaching events can help motivate people to support climate policies.

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    Daily Briefing

    The U.S. Economy’s Omni-Trend

    The data center boom is everywhere you look in U.S. economic and emissions data.

    A Google data center.
    Heatmap Illustration/Getty Images

    This is an edition of Heatmap Daily, an evening review of the day’s news written by our executive editor. Sign up for it here.

    It isn’t exactly a new thought, but I’ve been struck recently by how many trends in America’s economic and environmental data are fundamentally about the data center boom and the return of electricity demand:

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    Green
    Q&A

    The Health Researcher Diving into Data Center Policy

    A conversation with Emma Uridge of the Kansas Health Institute.

    The Q&A subject.
    Heatmap Illustration

    This week’s conversation is with Emma Uridge, analyst with the Kansas Health Institute. Uridge spent copious hours analyzing state and local laws on data center development to best understand how policymakers are responding to the potential environmental public health impacts of large AI infrastructure, including power and water. The report, which came out this week, also goes in depth into those health impacts. I reached out to her to discuss what she sees as must-watch territory for our readers on this emerging policy arena.

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    Anti-Solar Protests Are the Cool New Campaign Move in Wisconsin

    Plus more of the week’s big development fights.

    The United States.
    Heatmap Illustration/Getty Images

    1. Laramie County, Wyoming — Meta is fighting the fine it received in the Cheyenne data center water pollution controversy, and the conflict between the tech giant and the city’s small board of public utilities is continuing to spill out into the public.

    • Meta this week appealed the $10,000 fine that the board of public utilities issued over a rare bacteria found in Cheyenne’s sewer system. Meta is contesting any responsibility for the contaminant, claiming the board should’ve fined the construction company Fortis instead. You can read the full appeal here.
    • Afterwards, the board publicly released hundreds of pages of emails revealing how and why government employees linked the bacteria to Meta, specifically, including that officials tied the bacteria’s presence to the usage of closed-loop cooling systems for data centers. The emails also show local officials knew the water pollution was linked to the data center months earlier than previously thought. All the emails are available here.
    • Meanwhile, Cheyenne residents are attempting a long-shot bid to undo the annexation for the Microsoft data center I told you about. It’s unlikely to succeed because petitioners need to get about 10% of the last election cycle’s voting population to sign within 20 days… which at more than 2,000 people sounds all but impossible without a massive grassroots campaign.

    2. Niagara County, New York — This county just rejected a solar project’s highway work permits in a show of retaliation against the state’s Office of Renewable Energy Siting.

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