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Posts by Harry Stevens

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Why Tech Giants Are Ditching the Power Grid (Gift Article) Seeking power for data centers, Meta and other companies plan to use equipment that is expensive and polluting.

In Ohio and across the country, tech companies are going all out to build off-grid natural gas power plants for their A.I. data centers. Great story by @rebeccafelliott.bsky.social and @harrystevens.bsky.social
www.nytimes.com/interactive/...

1 month ago 4 1 0 3
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As @michael-thomas.bsky.social and his team at Cleanview found, most of the onsite power generation capacity at U.S. data centers will come from natural gas.

This equipment is often more expensive and polluting than equipment used in typical natural gas plants.

www.nytimes.com/interactive/...

1 month ago 7 3 0 0
A map of the United States showing natural gas plants that have been announced or are under construction. Plants that will not be connected to the grid are highlighted in blue, and grid-connected plants are in gray.

A map of the United States showing natural gas plants that have been announced or are under construction. Plants that will not be connected to the grid are highlighted in blue, and grid-connected plants are in gray.

It's not just in New Albany. More than half of the gas plants being built to serve data centers will be off grid, according to data from @globalenergymon.bsky.social.

Gift link: www.nytimes.com/interactive/...

1 month ago 4 1 1 0
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I have a new story with @rebeccafelliott.bsky.social on how Meta and others, seeking power for data centers, are building their own power plants.

These projects have transformed places like New Albany, Ohio, where farmland has given way to industry.

Gift link: www.nytimes.com/interactive/...

1 month ago 69 26 4 1

I was laid off from the Washington Post today, along with hundreds (!!!) of incredible colleagues. If you need a data journalist, chart designer, or wacky-idea-specialist, give me a shout!

2 months ago 221 84 10 8
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The Trump admin has started to realize batteries are an important general purpose technology. www.nytimes.com/2025/12/23/c...

3 months ago 355 73 21 12
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Trump moves to dismantle major US climate research center in Colorado The Trump administration is breaking up the National Center for Atmospheric Research, taking aim at one of the world's leading climate research labs.

Exclusive: The Trump administration is moving to dismantle the National Center for Atmospheric Research in Colorado, according to a senior White House official, taking aim at one of the world's leading climate research labs.

4 months ago 1481 1091 193 656
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Clean, Limitless Energy Exists. China Is Going Big in the Race to Harness It.

The question isn't whether fusion will arrive—it's who gets there first, and what that means for the rest of the century. #FusionEnergy #EnergyTransition #Science
www.nytimes.com/2025/12/13/c...

4 months ago 6 3 0 0
In America, the lack of government support is one reason so many fusion researchers are joining start-ups, Dr. Liu said.

Chinese officials, by contrast, are putting significant resources into a possible “ultimate solution” to humankind’s energy needs

In America, the lack of government support is one reason so many fusion researchers are joining start-ups, Dr. Liu said. Chinese officials, by contrast, are putting significant resources into a possible “ultimate solution” to humankind’s energy needs

In America, the lack of government support is one reason so many fusion researchers are joining start-ups, Dr. Liu said.

Chinese officials, by contrast, are putting significant resources into a possible “ultimate solution” to humankind’s energy needs

In America, the lack of government support is one reason so many fusion researchers are joining start-ups, Dr. Liu said. Chinese officials, by contrast, are putting significant resources into a possible “ultimate solution” to humankind’s energy needs

"In America, the lack of government support is one reason so many fusion researchers are joining start-ups, Dr. Liu said.

Chinese officials, by contrast, are putting significant resources into a possible “ultimate solution” to humankind’s energy needs"
www.nytimes.com/2025/12/13/c...

4 months ago 7 3 0 0
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Clean, Limitless Energy Exists. China Is Going Big in the Race to Harness It. Beijing is pouring vast resources into fusion research, while the U.S. wants private industry to lead the way. The winner could reshape civilization.
4 months ago 5 8 1 0
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Clean, Limitless Energy Exists. China Is Going Big in the Race to Harness It.

Who will get one tokamak over the line?

www.nytimes.com/2025/12/13/c...

4 months ago 5 2 1 0
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How China Raced Ahead of the U.S. on Nuclear Power (Gift Article) The United States was once the undisputed leader in atomic energy. Now it is trying to catch up.

Great @bradplumer.bsky.social @harrystevens.bsky.social piece on China's nuclear ambition. I'm biased but I think a good satellite comparison is worth 1000 words.

Incidentally, the score for aluminum smelters built since 1990 would be ~50-60 for China, 0 for the US.

www.nytimes.com/interactive/...

5 months ago 12 4 0 0
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How China Raced Ahead of the U.S. on Nuclear Power The United States was once the undisputed leader in atomic energy. Now it is trying to catch up.

From NYT Climate, via @harrystevens.bsky.social and @bradplumer.bsky.social

www.nytimes.com/interactive/...

5 months ago 6 3 2 0
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How China Raced Ahead of the U.S. on Nuclear Power The United States was once the undisputed leader in atomic energy. Now it is trying to catch up.

Nuclear reactors built or under construction since 2013
US: 2
China: 46

5 months ago 32 10 5 3

The EPA said it will stop updating a database that companies use to calculate the greenhouse gas emissions from their supply chains. In July, EPA suspended the database's lead scientist because he signed a letter criticizing the Trump administration.

www.nytimes.com/2025/08/08/c...

8 months ago 21 15 1 1
Figure showing coal, oil, and gas emissions from 1960, with a little red dot for 2025, with 0.5% growth in coal, 1% in oil, 1.6% in gas, and -1.1% for cement. These are all leap year adjusted since 2024 had one more day than 2025...

Figure showing coal, oil, and gas emissions from 1960, with a little red dot for 2025, with 0.5% growth in coal, 1% in oil, 1.6% in gas, and -1.1% for cement. These are all leap year adjusted since 2024 had one more day than 2025...

Based on fossil fuel growth rates from the IEA Coal Mid-Year Update, July Oil Market Report, & Gas Market Report Q3, fossil CO2 emissions would grow around 0.8% in 2025, reaching another record high...

We are only half way through the year, but don't build too much expectation for peak emissions.

8 months ago 96 50 9 7
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See How Marine Heat Waves Are Spreading Across the Globe

About a quarter of the world’s oceans are experiencing temperatures that qualify as a marine heat wave.

www.nytimes.com/2025/06/09/c...

10 months ago 21 15 3 2
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GitHub - HarryStevens/d3-geo-hemispheres: A map projection for a vertical world. A map projection for a vertical world. Contribute to HarryStevens/d3-geo-hemispheres development by creating an account on GitHub.

github.com/HarryStevens...

10 months ago 2 0 0 0
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github.com/HarryStevens...

10 months ago 1 1 1 0
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A Clean Energy Boom Was Just Starting. Now, a Republican Bill Aims to End It.

Since the IRA passed, companies have made plans to invest over $843 billion in clean energy projects. But just one-third of that has actually been invested, new data shows. Much of the rest is now at risk.

On the new House Republican plan to dismantle the IRA, with @harrystevens.bsky.social

11 months ago 30 17 1 3
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The Trump Administration Wants Seafloor Mining. What Does That Mean? A recent executive order would accelerate mining in little-understood undersea ecosystems.

Rebecca Dzombak, Max Bearak & @harrystevens.bsky.social look at the possible long-term consequences from seabed mining.

“Part of the challenge in understanding potential effects is that the pace of life is slow on the seafloor. Deep-sea fish can live hundreds of years. Corals can live thousands.”

11 months ago 19 10 0 0
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The azimuthal equal-area projects the sphere onto a disk and preserves area across the projection. You can display the whole planet, but latitudes far from the center get very distorted. The clipped two-hemisphere approach avoids the distortion and fits nicely on a phone.

11 months ago 3 0 0 0
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I first saw this last year in a map by @bananafish.bsky.social. Not sure if he invented it or saw it somewhere else.

www.washingtonpost.com/climate-envi...

11 months ago 10 2 1 0
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A cylindrical or pseudocylindrical (in this case Patterson's Natural Earth) projection will start looking real scrunchy at around 600 pixels, but the stacked Lamberts work great down to 300 pixels — as narrow as you'll ever need.

11 months ago 6 0 1 0
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A trick for fitting world maps on phones:

Stack two azimuthal equal-area projections, clipped at 90° longitude, each one rotated 180° from the other.

The bottom map covers the top's Antarctica, which reduces the total height and looks nice.

As seen in www.nytimes.com/2025/04/25/c...

11 months ago 84 15 3 5
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Here’s What to Know About Rare Earth Minerals and Renewable Energy The shift to cleaner power needs resources from China. An export ban just cut off some supplies.

ICYMI: C4ADS Program Director Krista Rasmussen spoke to @harrystevens.bsky.social about #China’s growing control of critical #mineral supply chains — building on our recent Refining Power investigation into ownership of Indonesian nickel refineries.

From @nytimes.com 👇
buff.ly/qJuK213

11 months ago 3 2 0 0
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Jury Finds Greenpeace Liable for Hundreds of Millions in Damages A lawsuit by pipeline giant Energy Transfer claimed Greenpeace had played a major, costly role in protests nearly a decade ago. Greenpeace has said a loss could put it out of business.

Jury Finds Greenpeace Liable for Hundreds of Millions in Damages

A lawsuit by pipeline giant Energy Transfer claimed Greenpeace had played a major, costly role in protests nearly a decade ago. Greenpeace has said a loss could put it out of business.

by Karen Zraick

www.nytimes.com/2025/03/19/c...

1 year ago 5 0 1 0
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See How Butterfly Numbers Are Dropping Near You (Gift Article) Populations are falling in the United States, a new study has found. Look up what’s happening in your area.

🦋 The study didn't investigate causes, but habitat disruption and pesticides likely contributed to declines. Climate change may have played a role: species saw larger drops in the south of their ranges, suggesting northward migration w/ temp. increase.

www.nytimes.com/interactive/...

3/3

1 year ago 20 6 0 0
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