Jeff Seidman (he/him)
@jeffsseidman.bsky.social
Teaches philosophy and environmental studies at Vassar College. Climate teaching website under development: https://climatesolutions-careers.org
@shreyassudhakar.com is a former rocket engineer, who has now spent years thinking and learning about heat pumps. Learn from him! Whether you're a heat pump-curious homeowner or a professional or policy-maker working in this space, his newsletter @heatpumped.org will make you smarter.
I would love to be thankful for the 1,000 subscribers of @heatpumped.org today... But we're not quite there yet!
Can you help me make it happen?
Subscribe here: buff.ly/kJGBnMJ
Can you help me make it happen?
Subscribe here: buff.ly/kJGBnMJ
November 27, 2025 at 5:17 PM
@shreyassudhakar.com is a former rocket engineer, who has now spent years thinking and learning about heat pumps. Learn from him! Whether you're a heat pump-curious homeowner or a professional or policy-maker working in this space, his newsletter @heatpumped.org will make you smarter.
Reposted by Jeff Seidman (he/him)
Completely infuriating. My primary vote is definitely going to a different candidate.
After Hochul’s administration agreed, a federal judge finalized a deal last week that will likely suspend New York’s all-electric building law for at least a year.
Just a few weeks earlier, the state argued that delaying the gas ban would cause “irreparable harm."
Just a few weeks earlier, the state argued that delaying the gas ban would cause “irreparable harm."
Why Did Hochul Back Down on New York's Gas Ban?
Just last month, the state argued in court that it couldn’t halt the all-electric buildings law even if it wanted to. Then it abruptly changed course.
nysfocus.com
November 27, 2025 at 1:19 PM
Completely infuriating. My primary vote is definitely going to a different candidate.
Reposted by Jeff Seidman (he/him)
One person who did notice was Joe Shapiro at Berkeley, who calculated the size of this effect a few years back. Our current average level of SUBSIDY for climate pollution in international trade is about a $100 per ton of CO2.
www.joseph-s-shapiro.com/research/Sha...
www.joseph-s-shapiro.com/research/Sha...
www.joseph-s-shapiro.com
November 26, 2025 at 6:32 PM
One person who did notice was Joe Shapiro at Berkeley, who calculated the size of this effect a few years back. Our current average level of SUBSIDY for climate pollution in international trade is about a $100 per ton of CO2.
www.joseph-s-shapiro.com/research/Sha...
www.joseph-s-shapiro.com/research/Sha...
Reposted by Jeff Seidman (he/him)
Wild, huh? My fellow climate nerds have spent so many millions of hours arguing about carbon border adjustment mechanisms, but very few of them have even noticed that we've all had border carbon subsidies in place in place all along.
November 26, 2025 at 6:30 PM
Wild, huh? My fellow climate nerds have spent so many millions of hours arguing about carbon border adjustment mechanisms, but very few of them have even noticed that we've all had border carbon subsidies in place in place all along.
Reposted by Jeff Seidman (he/him)
This year's tariff madness has an interesting structural feature. What @jonasnahm.com is calling an "inversion" is that Trump has higher tariff rates on intermediate goods and basic materials (esp. steel and aluminum) than finished goods. He points out one consequence. There are others.
A short🧵.
A short🧵.
10/15 This tariff inversion means Toyota pays less to ship a completed Prius from Japan than Ford pays for the inputs to build an F-150 in Michigan.
November 26, 2025 at 6:08 PM
This year's tariff madness has an interesting structural feature. What @jonasnahm.com is calling an "inversion" is that Trump has higher tariff rates on intermediate goods and basic materials (esp. steel and aluminum) than finished goods. He points out one consequence. There are others.
A short🧵.
A short🧵.
Reposted by Jeff Seidman (he/him)
Reposted by Jeff Seidman (he/him)
I need everybody to read this and understand what’s going on. These are spouses of US citizens in the country legally. They have entry clearance and green cards, they’ve passed background checks and have no criminal records. ICE is taking them anyway.
Gift link:
www.nytimes.com/2025/11/26/u...
Gift link:
www.nytimes.com/2025/11/26/u...
Green Card Interviews End in Handcuffs for Spouses of U.S. Citizens
www.nytimes.com
November 26, 2025 at 8:40 PM
I need everybody to read this and understand what’s going on. These are spouses of US citizens in the country legally. They have entry clearance and green cards, they’ve passed background checks and have no criminal records. ICE is taking them anyway.
Gift link:
www.nytimes.com/2025/11/26/u...
Gift link:
www.nytimes.com/2025/11/26/u...
Reposted by Jeff Seidman (he/him)
food trucks around campus should be required to drop their generators in favor of batteries.
November 25, 2025 at 4:19 PM
food trucks around campus should be required to drop their generators in favor of batteries.
Reposted by Jeff Seidman (he/him)
In a country where 40% of land is used for hamburger production, don't ever let anyone gaslight you into thinking renewables take up too much land. 🔌💡
November 24, 2025 at 5:23 PM
In a country where 40% of land is used for hamburger production, don't ever let anyone gaslight you into thinking renewables take up too much land. 🔌💡
Reposted by Jeff Seidman (he/him)
the only thing musk should be remembered for
Difficult to overstate how profound a failure DOGE was. Spending in FY2025 was not only than in FY2024 – but higher than it was projected to be when Trump first took office.*
The little bit of spending DOGE cut has already killed hundreds of thousands and will eventually lead to millions of deaths.
The little bit of spending DOGE cut has already killed hundreds of thousands and will eventually lead to millions of deaths.
Bye bye, “DOGE”.
It no longer exists as a “centralized entity”, according to the Office of Personnel Management.
@reuters.com
www.reuters.com/world/us/dog...
It no longer exists as a “centralized entity”, according to the Office of Personnel Management.
@reuters.com
www.reuters.com/world/us/dog...
November 23, 2025 at 2:23 PM
the only thing musk should be remembered for
Reposted by Jeff Seidman (he/him)
This is the world Republicans want.
November 23, 2025 at 3:07 PM
This is the world Republicans want.
Reposted by Jeff Seidman (he/him)
Bye gas network; had our gas meter removed today
4 years ago our aging (23 yr old) gas boiler was replaced with an air-source heat pump. 3 weeks ago our aging (26 yr old) cooker/ gas hob was replaced with new electric cooker/ induction hob. So we could finally disconnect from the gas grid. Yay!
1/
4 years ago our aging (23 yr old) gas boiler was replaced with an air-source heat pump. 3 weeks ago our aging (26 yr old) cooker/ gas hob was replaced with new electric cooker/ induction hob. So we could finally disconnect from the gas grid. Yay!
1/
November 19, 2025 at 2:36 PM
Bye gas network; had our gas meter removed today
4 years ago our aging (23 yr old) gas boiler was replaced with an air-source heat pump. 3 weeks ago our aging (26 yr old) cooker/ gas hob was replaced with new electric cooker/ induction hob. So we could finally disconnect from the gas grid. Yay!
1/
4 years ago our aging (23 yr old) gas boiler was replaced with an air-source heat pump. 3 weeks ago our aging (26 yr old) cooker/ gas hob was replaced with new electric cooker/ induction hob. So we could finally disconnect from the gas grid. Yay!
1/
Reposted by Jeff Seidman (he/him)
This can’t be stressed enough.
my takeaway from climate week nyc is that "climate storytelling" is a little too much "we must reimagine our deepest souls in relationship to mother nature and the moral abyss of the polycrisis into which we must now stare" and not enough "ok but get a heat pump"
November 22, 2025 at 3:46 PM
This can’t be stressed enough.
Reposted by Jeff Seidman (he/him)
Reposted by Jeff Seidman (he/him)
This is just to say
I parodied your poem
You left in the public domain
Forgive me
It was so sweet
and juicy
and ripe for riffing
I parodied your poem
You left in the public domain
Forgive me
It was so sweet
and juicy
and ripe for riffing
November 21, 2025 at 8:07 PM
This is just to say
I parodied your poem
You left in the public domain
Forgive me
It was so sweet
and juicy
and ripe for riffing
I parodied your poem
You left in the public domain
Forgive me
It was so sweet
and juicy
and ripe for riffing
Reposted by Jeff Seidman (he/him)
It is mind boggling to me that anyone would think it makes sense to dig up and burn fossil fuels only to try to regather and and rebury the carbon dioxide molecules once they've flitted throughout the atmosphere. Fossil fuel companies are obviously lying about DAC, but a lot of people believe it. 🔌💡
November 20, 2025 at 5:16 PM
It is mind boggling to me that anyone would think it makes sense to dig up and burn fossil fuels only to try to regather and and rebury the carbon dioxide molecules once they've flitted throughout the atmosphere. Fossil fuel companies are obviously lying about DAC, but a lot of people believe it. 🔌💡
Reposted by Jeff Seidman (he/him)
An important, and discouraging, reminder that innovation continues in the fossil fuel industries as well as in renewables. Cheap oil and gas remains a major barrier to decarbonization .
www.eia.gov/todayinenerg...
🔌💡
www.eia.gov/todayinenerg...
🔌💡
U.S. rig counts remain low as production efficiencies improve - U.S. Energy Information Administration (EIA)
www.eia.gov
November 19, 2025 at 4:05 PM
An important, and discouraging, reminder that innovation continues in the fossil fuel industries as well as in renewables. Cheap oil and gas remains a major barrier to decarbonization .
www.eia.gov/todayinenerg...
🔌💡
www.eia.gov/todayinenerg...
🔌💡
Reposted by Jeff Seidman (he/him)
if you want to know why US government doesn’t work good and relies on an incredibly dense regulatory kludge to provide social outcomes you have to talk about state capacity!! At every level!! That needs to be the actual centerpiece to your argument! Including the hatchet men who have demolished it!
November 19, 2025 at 2:28 PM
if you want to know why US government doesn’t work good and relies on an incredibly dense regulatory kludge to provide social outcomes you have to talk about state capacity!! At every level!! That needs to be the actual centerpiece to your argument! Including the hatchet men who have demolished it!
Reposted by Jeff Seidman (he/him)
TAE says breakthrough means commercial fusion power plant will be available in the "early 2030s."
My skepticism about fusion remains but lessens.
Bears watching.
More ways to displace fossil fuels the better.
tae.com/tae-shortens... #energysky
My skepticism about fusion remains but lessens.
Bears watching.
More ways to displace fossil fuels the better.
tae.com/tae-shortens... #energysky
TAE shortens device roadmap, prepares for commercial era - TAE Technologies | Fusion Power Clean Energy Company
TAE’s Norm machine – the first to produce FRC plasmas with only neutral beam injection – has performed beyond expectations, leapfrogging a planned sixth device, Copernicus
tae.com
November 18, 2025 at 4:04 PM
TAE says breakthrough means commercial fusion power plant will be available in the "early 2030s."
My skepticism about fusion remains but lessens.
Bears watching.
More ways to displace fossil fuels the better.
tae.com/tae-shortens... #energysky
My skepticism about fusion remains but lessens.
Bears watching.
More ways to displace fossil fuels the better.
tae.com/tae-shortens... #energysky
Reposted by Jeff Seidman (he/him)
1. Public utility commissions rubber stamping rate increases
2. Households being taxed to pay for infrastructure used by industry
3. Electric grid not designed for climate change, extreme weather driving rebuilding costs up
Solutions:
1. VPPs & efficiency
2. Build clean energy
3. Accountable PUCs
2. Households being taxed to pay for infrastructure used by industry
3. Electric grid not designed for climate change, extreme weather driving rebuilding costs up
Solutions:
1. VPPs & efficiency
2. Build clean energy
3. Accountable PUCs
You are a random Dem running in 2026 -- say, for some House seat in some swing state. You're on local media. You're asked: "what are three reasons that energy prices are rising & what are three things you'd like to do to bring them down?" What's your answer?
November 18, 2025 at 12:58 AM
1. Public utility commissions rubber stamping rate increases
2. Households being taxed to pay for infrastructure used by industry
3. Electric grid not designed for climate change, extreme weather driving rebuilding costs up
Solutions:
1. VPPs & efficiency
2. Build clean energy
3. Accountable PUCs
2. Households being taxed to pay for infrastructure used by industry
3. Electric grid not designed for climate change, extreme weather driving rebuilding costs up
Solutions:
1. VPPs & efficiency
2. Build clean energy
3. Accountable PUCs
Reposted by Jeff Seidman (he/him)
I’m sorry to be self promoting but I a) have never been seduced by a fascist with a brain worm b) am capable of crafting a decent sentence and c) wrote a book that did not earn me a fawning profile in the newspaper but is still pretty good
bookshop.org/p/books/huma...
bookshop.org/p/books/huma...
Human Nature: Nine Ways to Feel About Our Changing Planet
Nine Ways to Feel About Our Changing Planet
bookshop.org
November 17, 2025 at 5:30 PM
I’m sorry to be self promoting but I a) have never been seduced by a fascist with a brain worm b) am capable of crafting a decent sentence and c) wrote a book that did not earn me a fawning profile in the newspaper but is still pretty good
bookshop.org/p/books/huma...
bookshop.org/p/books/huma...
Reposted by Jeff Seidman (he/him)
Found my Met Gala outfit
November 16, 2025 at 6:42 PM
Found my Met Gala outfit
Reposted by Jeff Seidman (he/him)
👏🏻👏🏻👏🏻👏🏻
November 16, 2025 at 5:28 PM
👏🏻👏🏻👏🏻👏🏻
Reposted by Jeff Seidman (he/him)
Microrobots may become an effective tool in breaking down the dangerous blood vessel blockages that cause strokes.
www.popsci.com/health/micro...
www.popsci.com/health/micro...
These tiny robots swim through your blood to fight strokes
Magnets steer the injectable microrobots to destroy blood clots.
www.popsci.com
November 16, 2025 at 4:36 AM
Reposted by Jeff Seidman (he/him)
In 16th cen Florence, the Uffizi (now a famous art museum but originally the Offices of the Medici) were connected to the family's Pitti Palace by a passageway--the Vasari Corridor--that ran across the Arno. This made it possible to avoid people when commuting.
13yo me was shocked to learn this.
13yo me was shocked to learn this.
November 16, 2025 at 5:14 AM
In 16th cen Florence, the Uffizi (now a famous art museum but originally the Offices of the Medici) were connected to the family's Pitti Palace by a passageway--the Vasari Corridor--that ran across the Arno. This made it possible to avoid people when commuting.
13yo me was shocked to learn this.
13yo me was shocked to learn this.