Mark Sandeen
@marksandeen.bsky.social
Town of Lexington Select Board Member
Former Chair, Sustainable Lexington
Former Chair, Sustainable Lexington
Reposted by Mark Sandeen
AI will kill us all (IF we let it). Not talking here about rogue AI agents, I'm talking about rogue tech oligarchs helping to torch the planet with major new investments in fossil fuel infrastructure.
US Data Centers Set to Burn More Natural Gas Than Most Nations
Data centers in the United States will consume more natural gas than most countries within a decade, according to a new outlook from BloombergNEF.
www.bloomberg.com
September 15, 2026 at 2:44 PM
AI will kill us all (IF we let it). Not talking here about rogue AI agents, I'm talking about rogue tech oligarchs helping to torch the planet with major new investments in fossil fuel infrastructure.
Reposted by Mark Sandeen
"Pfas companies are launching a “tidal wave” of forever chemicals production to meet demand from the AI industry, a campaign organisation has warned...a survey of the 10 biggest manufacturers found most had plans to increase production."
www.theguardian.com/environment/...
www.theguardian.com/environment/...
‘Tidal wave’ of Pfas being launched to satisfy AI industry, campaigners warn
Big manufacturers planning to produce more of the forever chemicals to meet demand from datacentres
www.theguardian.com
September 14, 2026 at 9:42 PM
"Pfas companies are launching a “tidal wave” of forever chemicals production to meet demand from the AI industry, a campaign organisation has warned...a survey of the 10 biggest manufacturers found most had plans to increase production."
www.theguardian.com/environment/...
www.theguardian.com/environment/...
Reposted by Mark Sandeen
Short sellers have reaped more than $2B in profits by shorting three small modular nuclear reactor companies—NuScale, Nano, and Oklo—over the past year, as the collapse of the one-time high-flying stocks wiped more than $30B off their combined market value - FT.
seekingalpha.com/news/4634594...
seekingalpha.com/news/4634594...
Short sellers have reaped billions in profits from betting against small modular reactor firms - FT
Short sellers have reaped more than $2B in profits by shorting three small modular nuclear reactor companies - NuScale Power, Nano Nuclear Energy and Oklo - over the past year, FT reported.
seekingalpha.com
September 10, 2026 at 4:17 AM
Short sellers have reaped more than $2B in profits by shorting three small modular nuclear reactor companies—NuScale, Nano, and Oklo—over the past year, as the collapse of the one-time high-flying stocks wiped more than $30B off their combined market value - FT.
seekingalpha.com/news/4634594...
seekingalpha.com/news/4634594...
Reposted by Mark Sandeen
Today's reminder that climate change endangers our health. It doesn't endanger us equally. Folks with lower income, older folks, folks with pre-existing conditions are way more vulnerable to extreme heat. www.npr.org/2026/09/07/n...
'Her body temperature was 106': How heat is killing Americans in their homes
Heat kills thousands of people across the U.S. every year. The risk is especially high for the millions of Americans who live in manufactured housing like mobile homes and trailers.
www.npr.org
September 7, 2026 at 11:35 PM
Today's reminder that climate change endangers our health. It doesn't endanger us equally. Folks with lower income, older folks, folks with pre-existing conditions are way more vulnerable to extreme heat. www.npr.org/2026/09/07/n...
Reposted by Mark Sandeen
These Himalayan glaciers are collapsing extremely fast. So fast that the rock underneath them has become unstable and the ice holding the rock formations together is melting because the entire region is warming 5 times faster than the rest of the planet.
Billions rely on steady meltwater for food.
Billions rely on steady meltwater for food.
Climate change was the 100% cause behind the Nepal disaster.
Watch this excellent video explaining the precise causes of the mountain faults that were kept together with ice acting as cement. This area’s air is warming up 5x faster than global average temperatures, melting this icy cement.
Watch this excellent video explaining the precise causes of the mountain faults that were kept together with ice acting as cement. This area’s air is warming up 5x faster than global average temperatures, melting this icy cement.
Everything We Know About Nepal's Flood - And What Everyone Got Wrong
YouTube video by Critical Latitude
youtu.be
September 4, 2026 at 6:52 AM
These Himalayan glaciers are collapsing extremely fast. So fast that the rock underneath them has become unstable and the ice holding the rock formations together is melting because the entire region is warming 5 times faster than the rest of the planet.
Billions rely on steady meltwater for food.
Billions rely on steady meltwater for food.
September 2, 2026 at 10:04 AM
Reposted by Mark Sandeen
Publicly owned rural co-ops are some of the most fossil-happy utilities in the US. Public ownership is no guarantee of pro-social behavior.
Electric co-ops press for repeal of gas power plant emissions rules
“We are anxious to see action on this,” said National Rural Electric Cooperative Association CEO Jim Matheson. “We all understand that natural gas is the go-to for new generation in this country.”
www.utilitydive.com
August 31, 2026 at 4:47 PM
Publicly owned rural co-ops are some of the most fossil-happy utilities in the US. Public ownership is no guarantee of pro-social behavior.
Reposted by Mark Sandeen
Here's something that's not talked about enough
The air pollution from burning fossil fuels kills an estimated 10 million people a year
1 in 6 deaths is caused by fossil fuels
www.sciencedirect.com/science/arti...
The air pollution from burning fossil fuels kills an estimated 10 million people a year
1 in 6 deaths is caused by fossil fuels
www.sciencedirect.com/science/arti...
October 21, 2025 at 12:20 PM
Here's something that's not talked about enough
The air pollution from burning fossil fuels kills an estimated 10 million people a year
1 in 6 deaths is caused by fossil fuels
www.sciencedirect.com/science/arti...
The air pollution from burning fossil fuels kills an estimated 10 million people a year
1 in 6 deaths is caused by fossil fuels
www.sciencedirect.com/science/arti...
Reposted by Mark Sandeen
Donald Trump is trying to give away part of Yosemite National Park to a private developer to develop a road near an ancient sequoia stand.
Oh hell no! You better believe we will fight this with everything we’ve got!
Oh hell no! You better believe we will fight this with everything we’ve got!
August 29, 2026 at 3:09 AM
Donald Trump is trying to give away part of Yosemite National Park to a private developer to develop a road near an ancient sequoia stand.
Oh hell no! You better believe we will fight this with everything we’ve got!
Oh hell no! You better believe we will fight this with everything we’ve got!
Reposted by Mark Sandeen
Maybe I’m missing something but I’m not seeing any second-day reporting on the DSCC and DCCC suppressing a political scientists’s report about their shady email + text fundraising practices.
I checked Google News and searched for related terms on here.
Anybody else seeing anything?
I checked Google News and searched for related terms on here.
Anybody else seeing anything?
August 17, 2026 at 7:59 PM
Maybe I’m missing something but I’m not seeing any second-day reporting on the DSCC and DCCC suppressing a political scientists’s report about their shady email + text fundraising practices.
I checked Google News and searched for related terms on here.
Anybody else seeing anything?
I checked Google News and searched for related terms on here.
Anybody else seeing anything?
Reposted by Mark Sandeen
PSA: @adambonica.bsky.social is a badass. So impressed with his piece on spam PACs targeting seniors. The Democratic party needs to get on top of this.
Follow and subscribe to his substack!
data4democracy.substack.com/p/hook-and-s...
Follow and subscribe to his substack!
data4democracy.substack.com/p/hook-and-s...
Hook and Squeeze
How Democratic consultants, committees, and party leaders built a fundraising spam pipeline that funnels money from a captive pool of elderly donors into their own operations.
data4democracy.substack.com
August 17, 2026 at 3:41 AM
PSA: @adambonica.bsky.social is a badass. So impressed with his piece on spam PACs targeting seniors. The Democratic party needs to get on top of this.
Follow and subscribe to his substack!
data4democracy.substack.com/p/hook-and-s...
Follow and subscribe to his substack!
data4democracy.substack.com/p/hook-and-s...
Reposted by Mark Sandeen
‼️ Another 1000-YR Rain Event
In fact, in some cases it exceeded the criteria by almost 2X. Catastrophic #Flood underway, Flood Emergency for #Indiana in Cambridge City, near New Castle, South of Muncie, east of #Indianapolis. Stay safe folks, turn around don’t drown! 1/
In fact, in some cases it exceeded the criteria by almost 2X. Catastrophic #Flood underway, Flood Emergency for #Indiana in Cambridge City, near New Castle, South of Muncie, east of #Indianapolis. Stay safe folks, turn around don’t drown! 1/
August 12, 2026 at 6:05 PM
‼️ Another 1000-YR Rain Event
In fact, in some cases it exceeded the criteria by almost 2X. Catastrophic #Flood underway, Flood Emergency for #Indiana in Cambridge City, near New Castle, South of Muncie, east of #Indianapolis. Stay safe folks, turn around don’t drown! 1/
In fact, in some cases it exceeded the criteria by almost 2X. Catastrophic #Flood underway, Flood Emergency for #Indiana in Cambridge City, near New Castle, South of Muncie, east of #Indianapolis. Stay safe folks, turn around don’t drown! 1/
Reposted by Mark Sandeen
I feared this would be one of the effects of the e-bike moral panic: Disabled people losing access to a gamechanging piece of transportation technology.
This is a great reminder of how disabled nondrivers are often completely absent from conversations and policy debates about transportation.
This is a great reminder of how disabled nondrivers are often completely absent from conversations and policy debates about transportation.
August 12, 2026 at 6:25 PM
I feared this would be one of the effects of the e-bike moral panic: Disabled people losing access to a gamechanging piece of transportation technology.
This is a great reminder of how disabled nondrivers are often completely absent from conversations and policy debates about transportation.
This is a great reminder of how disabled nondrivers are often completely absent from conversations and policy debates about transportation.
Reposted by Mark Sandeen
Smoke kills 24k Americans/yr. “The cost of climate-worsened wildfire smoke alone is larger than what earlier studies said every other estimated cost of climate change would be, combined. We should also worry about other surprise catastrophes that are lurking we’ll only learn about after they occur.
August 12, 2026 at 5:54 PM
Smoke kills 24k Americans/yr. “The cost of climate-worsened wildfire smoke alone is larger than what earlier studies said every other estimated cost of climate change would be, combined. We should also worry about other surprise catastrophes that are lurking we’ll only learn about after they occur.
Reposted by Mark Sandeen
A simple point that surprisingly few people understand:
"The longer we wait to reach net zero, the higher the eventual peak temperature will be, and the worse the associated damage. Warming is now nearly 1.4C above pre-industrial levels. Imagine summers when it gets closer to 2C."
"The longer we wait to reach net zero, the higher the eventual peak temperature will be, and the worse the associated damage. Warming is now nearly 1.4C above pre-industrial levels. Imagine summers when it gets closer to 2C."
How to stop global warming
The answer is obvious to all except the real climate change zealots: the anti-net zero movement
giftarticle.ft.com
August 12, 2026 at 11:47 AM
A simple point that surprisingly few people understand:
"The longer we wait to reach net zero, the higher the eventual peak temperature will be, and the worse the associated damage. Warming is now nearly 1.4C above pre-industrial levels. Imagine summers when it gets closer to 2C."
"The longer we wait to reach net zero, the higher the eventual peak temperature will be, and the worse the associated damage. Warming is now nearly 1.4C above pre-industrial levels. Imagine summers when it gets closer to 2C."
Reposted by Mark Sandeen
European summers aren't what they used to be!
Grey curve is the climate of 1950-90. Every coloured line is a summer since 1991. Every one since 2005 sits beyond the 95th percentile of the curve.
This isn't a shifting #climate. It's already a new one! 🤯🥵
Plot inspired by Barriopedro et al. 2011
Grey curve is the climate of 1950-90. Every coloured line is a summer since 1991. Every one since 2005 sits beyond the 95th percentile of the curve.
This isn't a shifting #climate. It's already a new one! 🤯🥵
Plot inspired by Barriopedro et al. 2011
August 10, 2026 at 7:10 AM
European summers aren't what they used to be!
Grey curve is the climate of 1950-90. Every coloured line is a summer since 1991. Every one since 2005 sits beyond the 95th percentile of the curve.
This isn't a shifting #climate. It's already a new one! 🤯🥵
Plot inspired by Barriopedro et al. 2011
Grey curve is the climate of 1950-90. Every coloured line is a summer since 1991. Every one since 2005 sits beyond the 95th percentile of the curve.
This isn't a shifting #climate. It's already a new one! 🤯🥵
Plot inspired by Barriopedro et al. 2011
Reposted by Mark Sandeen
Exxon spent years telling everyone carbon capture could save the planet, while earning tens of $billions doing otherwise.
The EU recently told it to help pay for carbon storage.
In response, the world’s largest non-state-owned oil major has initiated a process to sue.
www.ft.com/content/6afa...
The EU recently told it to help pay for carbon storage.
In response, the world’s largest non-state-owned oil major has initiated a process to sue.
www.ft.com/content/6afa...
Exxon nears peak impunity on climate obligations
Oil major’s move against the EU’s carbon storage rules is odd
www.ft.com
August 8, 2026 at 7:54 PM
Exxon spent years telling everyone carbon capture could save the planet, while earning tens of $billions doing otherwise.
The EU recently told it to help pay for carbon storage.
In response, the world’s largest non-state-owned oil major has initiated a process to sue.
www.ft.com/content/6afa...
The EU recently told it to help pay for carbon storage.
In response, the world’s largest non-state-owned oil major has initiated a process to sue.
www.ft.com/content/6afa...
Reposted by Mark Sandeen
Almost a third of the U.S. population, maybe more, has tasted wildfire smoke this summer.
The scale of our climate adaptation challenge is immense and I think it’s worth our time to make sense of what all we need to invest in—and how.
Latest on the blog:
advaitcore.substack.com/p/changes-in...
The scale of our climate adaptation challenge is immense and I think it’s worth our time to make sense of what all we need to invest in—and how.
Latest on the blog:
advaitcore.substack.com/p/changes-in...
Changes in the light
Notes on a capital theory of climate adaptation—and, tentatively, how to invest in a just transition for our quality of life.
advaitcore.substack.com
August 8, 2026 at 3:19 PM
Almost a third of the U.S. population, maybe more, has tasted wildfire smoke this summer.
The scale of our climate adaptation challenge is immense and I think it’s worth our time to make sense of what all we need to invest in—and how.
Latest on the blog:
advaitcore.substack.com/p/changes-in...
The scale of our climate adaptation challenge is immense and I think it’s worth our time to make sense of what all we need to invest in—and how.
Latest on the blog:
advaitcore.substack.com/p/changes-in...
Reposted by Mark Sandeen
PJM released its report on the large load loss event on 7/22. The grid lost 3,800 MW of load from data centers simultaneously, and it took 9 minutes to return to normal operations. The fault on the 230 kV line cleared normally, but data centers flipped to backup power.
www.pjm.com/-/media/DotC...
www.pjm.com/-/media/DotC...
August 7, 2026 at 8:36 PM
PJM released its report on the large load loss event on 7/22. The grid lost 3,800 MW of load from data centers simultaneously, and it took 9 minutes to return to normal operations. The fault on the 230 kV line cleared normally, but data centers flipped to backup power.
www.pjm.com/-/media/DotC...
www.pjm.com/-/media/DotC...
Reposted by Mark Sandeen
🚨 Scientists have been warning for more than a century that catastrophic weather events were inevitable if humanity kept emitting GHG's.
But is it worse than even they expected?
Climate scientist @drkatemarvel.bsky.social shares her expert perspective in our latest Insights: https://bit.ly/4wsYPMw
But is it worse than even they expected?
Climate scientist @drkatemarvel.bsky.social shares her expert perspective in our latest Insights: https://bit.ly/4wsYPMw
July 31, 2026 at 6:39 PM
🚨 Scientists have been warning for more than a century that catastrophic weather events were inevitable if humanity kept emitting GHG's.
But is it worse than even they expected?
Climate scientist @drkatemarvel.bsky.social shares her expert perspective in our latest Insights: https://bit.ly/4wsYPMw
But is it worse than even they expected?
Climate scientist @drkatemarvel.bsky.social shares her expert perspective in our latest Insights: https://bit.ly/4wsYPMw
Reposted by Mark Sandeen
Every single second, the world hands $6,000 to the fossil fuel industry in subsidies.
That’s $5 TRILLION every year.
Renewables? Barely a fraction of that.
We are literally paying to cook our own planet.
When does this madness stop? 🌍💸
#ClimateCrisis #FossilFuels
That’s $5 TRILLION every year.
Renewables? Barely a fraction of that.
We are literally paying to cook our own planet.
When does this madness stop? 🌍💸
#ClimateCrisis #FossilFuels
August 2, 2026 at 5:37 AM
Every single second, the world hands $6,000 to the fossil fuel industry in subsidies.
That’s $5 TRILLION every year.
Renewables? Barely a fraction of that.
We are literally paying to cook our own planet.
When does this madness stop? 🌍💸
#ClimateCrisis #FossilFuels
That’s $5 TRILLION every year.
Renewables? Barely a fraction of that.
We are literally paying to cook our own planet.
When does this madness stop? 🌍💸
#ClimateCrisis #FossilFuels
Reposted by Mark Sandeen
As the UN Secy General says, the Euro wildfires are just an opening act to the El Nino bearing down on planet earth.
It's time for smart politicians to stop climate hushing and start getting ahead of the heat.
open.substack.com/pub/billmcki...
It's time for smart politicians to stop climate hushing and start getting ahead of the heat.
open.substack.com/pub/billmcki...
High Heat, High Drama
Europe is starting to provide some answers about the next step in the climate fight
open.substack.com
August 1, 2026 at 6:27 PM
As the UN Secy General says, the Euro wildfires are just an opening act to the El Nino bearing down on planet earth.
It's time for smart politicians to stop climate hushing and start getting ahead of the heat.
open.substack.com/pub/billmcki...
It's time for smart politicians to stop climate hushing and start getting ahead of the heat.
open.substack.com/pub/billmcki...
Reposted by Mark Sandeen
Which vehicles most endanger the drivers of other cars?
Giant pickup trucks — and the Dodge Charger
Source: www.iihs.org/news/detail/...
Giant pickup trucks — and the Dodge Charger
Source: www.iihs.org/news/detail/...
July 31, 2026 at 3:04 PM
Which vehicles most endanger the drivers of other cars?
Giant pickup trucks — and the Dodge Charger
Source: www.iihs.org/news/detail/...
Giant pickup trucks — and the Dodge Charger
Source: www.iihs.org/news/detail/...