Jan Herder
@janherder.bsky.social
Gaian, trees, permaculture, history, archaeology, Birder, vegan, Covid conscious. Environmental Realist: Doomer. Posting on Overshoot, climate, weather and issues of collapse equity. Living on colonized Passamaquoddy land.
Reposted by Jan Herder
Reposted by Jan Herder
A pocket of very warm air (relative to average) over the North Pole enabled highs to reach above freezing Sunday. Meanwhile temps in the Midwest struggled to get above zero.
Upside down day.
Upside down day.
December 15, 2025 at 3:28 AM
A pocket of very warm air (relative to average) over the North Pole enabled highs to reach above freezing Sunday. Meanwhile temps in the Midwest struggled to get above zero.
Upside down day.
Upside down day.
Hell is now
We are told things are getting better. They aren’t.
“Hell Is Here” is what the world looks like when greenwashing replaces truth.
My new article: Hell Is Here: Greenwashed.
open.substack.com/pub/lylel/p/...
“Hell Is Here” is what the world looks like when greenwashing replaces truth.
My new article: Hell Is Here: Greenwashed.
open.substack.com/pub/lylel/p/...
HELL IS HERE: What Greenwashed Reveals About the Truth We're Not Allowed to Say
Why the most taboo words in environmentalism are "overpopulation" and "less."
open.substack.com
December 13, 2025 at 5:56 PM
Hell is now
Reposted by Jan Herder
December 13, 2025 at 3:58 PM
Reposted by Jan Herder
Reposted by Jan Herder
This is something that most fail to see👇
Nature doesn’t negotiate with budgets. When a system survives only because of constant human intervention, it’s no longer an ecosystem…it’s a managed illusion. The façade crumbles when the money stops.
apple.news/A6r-PfYqcSoy...
apple.news/A6r-PfYqcSoy...
Experts issue warning as nightmare creature spreads across US region: 'Something out of a horror movie' — The Cool Down
Left untreated, the invasive creature is a complete menace. Dec 09, 2025 Funding to research new ways to control the sea lamprey, the invasive vacuum cleaner of the Great Lakes, is at risk. The develo...
apple.news
December 12, 2025 at 9:58 AM
This is something that most fail to see👇
Absence of El Niño
Baked
Baked
Temperature anomaly over the years through Nov 2025, when it was 1.32°C warmer vs 1951-1980, more vs 1850-1900, and even more vs a genuinely pre-industrial base. Note that 2025 anomalies occurred in the absence of El Niño conditions elevating temperatures. arctic-news.blogspot.com/2025/12/the-...
December 11, 2025 at 1:22 PM
Absence of El Niño
Baked
Baked
Trees go first
Insects are collapsing. Flowery plants will be gone 🍓🥔
Temperatures are rising too quickly for slow growing trees to adapt via cross-pollination 🌳🌲
Most human calories are from wind pollinating grasses. Wheat, maize, rice. We could adjust but are overpopulated. Shortages are enough for extinction.
Temperatures are rising too quickly for slow growing trees to adapt via cross-pollination 🌳🌲
Most human calories are from wind pollinating grasses. Wheat, maize, rice. We could adjust but are overpopulated. Shortages are enough for extinction.
December 11, 2025 at 1:08 PM
Trees go first
Reposted by Jan Herder
Our @leanahosea.bsky.social on Roundtable talking about the potential cocktail of chemical pollutants from waste crime with Enda Brady, @investigate-europe.eu's Lorenzo Buzzoni, and former police Chief Superintendent, Dal Babu:
youtu.be/PPL_uPkLqzw?...
youtu.be/PPL_uPkLqzw?...
December 9, 2025 at 8:19 PM
Our @leanahosea.bsky.social on Roundtable talking about the potential cocktail of chemical pollutants from waste crime with Enda Brady, @investigate-europe.eu's Lorenzo Buzzoni, and former police Chief Superintendent, Dal Babu:
youtu.be/PPL_uPkLqzw?...
youtu.be/PPL_uPkLqzw?...
Stone soup
At 1.5°C, the atmosphere can hold over 10% more water vapor than it could in the pre-industrial period 1850-1900.
The additional precipitation leads to car soup, airport soup, road soup, city soup, farm soup, and a hearty portion of global industrial civilization soup.
The additional precipitation leads to car soup, airport soup, road soup, city soup, farm soup, and a hearty portion of global industrial civilization soup.
December 8, 2025 at 3:20 PM
Stone soup
Reposted by Jan Herder
I'm dumbfounded every time I see this methane graph
We don't know what the last time was that methane concentrations were this high (1943 ppb @noaa.gov).
Maybe 55 million years ago during the Paleocene–Eocene Thermal Maximum (PETM)?
We don't know what the last time was that methane concentrations were this high (1943 ppb @noaa.gov).
Maybe 55 million years ago during the Paleocene–Eocene Thermal Maximum (PETM)?
March 9, 2025 at 10:52 PM
I'm dumbfounded every time I see this methane graph
We don't know what the last time was that methane concentrations were this high (1943 ppb @noaa.gov).
Maybe 55 million years ago during the Paleocene–Eocene Thermal Maximum (PETM)?
We don't know what the last time was that methane concentrations were this high (1943 ppb @noaa.gov).
Maybe 55 million years ago during the Paleocene–Eocene Thermal Maximum (PETM)?
Reposted by Jan Herder
We’ve covered the planet with 10,000+ cities and millions of miles of asphalt and concrete….surfaces that absorb and re-radiate heat far more intensely than natural land cover.
They don’t replace greenhouse warming. They amplify it.
They don’t replace greenhouse warming. They amplify it.
December 6, 2025 at 1:06 PM
We’ve covered the planet with 10,000+ cities and millions of miles of asphalt and concrete….surfaces that absorb and re-radiate heat far more intensely than natural land cover.
They don’t replace greenhouse warming. They amplify it.
They don’t replace greenhouse warming. They amplify it.
Corvids
Thanks, Martin. Humans may be technically more intelligent but being aware and smart is something else? Corvids can be found almost anywhere on Earth. Except for where the other "aware" species 🦜 live in South America (Peru). They are too similar and don't overlap? :)
December 5, 2025 at 11:28 PM
Corvids
Reposted by Jan Herder
100 years of November sea surface temperature departures through this year. This is a lot of variability along with the long-term warming. For example, the La Niña signature for this year is becoming more prominent in the equatorial Pacific Ocean. 🌊
Data from NOAA ERSSTv5 at doi.org/10.7289/V5T7...
Data from NOAA ERSSTv5 at doi.org/10.7289/V5T7...
December 4, 2025 at 12:47 PM
100 years of November sea surface temperature departures through this year. This is a lot of variability along with the long-term warming. For example, the La Niña signature for this year is becoming more prominent in the equatorial Pacific Ocean. 🌊
Data from NOAA ERSSTv5 at doi.org/10.7289/V5T7...
Data from NOAA ERSSTv5 at doi.org/10.7289/V5T7...
Data centers increase nitrates in the water. And, of course, #PFAS
‘The rise in nitrates in the drinking water has been linked to a surge in rare cancers and miscarriages. But efforts to limit further contamination and provide residents with safe, clean drinking water have been slow to materialize. …40% of the county’s residents live below the poverty line’
Data centers in Oregon might be helping to drive an increase in cancer and miscarriages | The Verge share.google/tFiz2i2UJeJ7...
December 2, 2025 at 5:33 PM
Data centers increase nitrates in the water. And, of course, #PFAS
Reposted by Jan Herder
[H5N1] 'In the UK, swans are at risk of being wiped out by bird flu after being hit in alarming numbers.' www.manchestereveningnews.co.uk/news/uk-news... #ZoonoticDisease #H5N1 #H5N5 #AvianFlu #BirdFlu #Swans #England #UK
UK bird flu outbreaks spark wildlife fears amid 'beginning of the end' warning
Wildlife rescuers fear the swan population could be "decimated" following suspected bird flu outbreaks
www.manchestereveningnews.co.uk
December 1, 2025 at 5:37 PM
[H5N1] 'In the UK, swans are at risk of being wiped out by bird flu after being hit in alarming numbers.' www.manchestereveningnews.co.uk/news/uk-news... #ZoonoticDisease #H5N1 #H5N5 #AvianFlu #BirdFlu #Swans #England #UK
Reposted by Jan Herder
I sometimes say things like: Our alienation from nature has made everything senseless for our senses and has made us mentally challenged.
This is more material than many can imagine. Bad food, toxins everywhere, infections, pandemics ...
Keep treating symptoms?
www.thelancet.com/pb-assets/La...
This is more material than many can imagine. Bad food, toxins everywhere, infections, pandemics ...
Keep treating symptoms?
www.thelancet.com/pb-assets/La...
December 1, 2025 at 1:30 PM
I sometimes say things like: Our alienation from nature has made everything senseless for our senses and has made us mentally challenged.
This is more material than many can imagine. Bad food, toxins everywhere, infections, pandemics ...
Keep treating symptoms?
www.thelancet.com/pb-assets/La...
This is more material than many can imagine. Bad food, toxins everywhere, infections, pandemics ...
Keep treating symptoms?
www.thelancet.com/pb-assets/La...
Lowest on record
🚨 Monday ice update - #Arctic sea ice extent is currently the lowest on record (JAXA data)
• about 1,110,000 km² below the 2010s mean
• about 1,600,000 km² below the 2000s mean
• about 2,310,000 km² below the 1990s mean
• about 2,810,000 km² below the 1980s mean
More: zacklabe.com/arctic-sea-i...
• about 1,110,000 km² below the 2010s mean
• about 1,600,000 km² below the 2000s mean
• about 2,310,000 km² below the 1990s mean
• about 2,810,000 km² below the 1980s mean
More: zacklabe.com/arctic-sea-i...
December 1, 2025 at 4:20 PM
Lowest on record
Reposted by Jan Herder
Ocean temperatures across much of the northern Pacific remained well above average through October. Really the only sizable cooler patch shows up near the traditional region for the ongoing La Niña.
Sea surface temperature data from NOAA OISSTv2.1 (downloads.psl.noaa.gov/Datasets/noa...).
Sea surface temperature data from NOAA OISSTv2.1 (downloads.psl.noaa.gov/Datasets/noa...).
November 30, 2025 at 8:23 PM
Ocean temperatures across much of the northern Pacific remained well above average through October. Really the only sizable cooler patch shows up near the traditional region for the ongoing La Niña.
Sea surface temperature data from NOAA OISSTv2.1 (downloads.psl.noaa.gov/Datasets/noa...).
Sea surface temperature data from NOAA OISSTv2.1 (downloads.psl.noaa.gov/Datasets/noa...).
Drying up
Water reserves drying up in face of climate change.
Our latest article, out now:
share.google/0eyMBdzbmWkA...
🧵
1/6
Our latest article, out now:
share.google/0eyMBdzbmWkA...
🧵
1/6
Revealed: Europe’s water reserves drying up due to climate breakdown
Exclusive: UCL scientists find large swathes of southern Europe are drying up, with ‘far-reaching’ implications
share.google
November 29, 2025 at 1:52 PM
Drying up
Reposted by Jan Herder
Roses are red,
Write poems with aplomb
Write poems with aplomb
It turns out all the guardrails in the world won’t protect a chatbot from meter and rhyme. www.wired.com/story/poems-...
Poems Can Trick AI Into Helping You Make a Nuclear Weapon
It turns out all the guardrails in the world won’t protect a chatbot from meter and rhyme.
www.wired.com
November 28, 2025 at 11:08 AM
Roses are red,
Write poems with aplomb
Write poems with aplomb
Reposted by Jan Herder
"We're making unprecedented investments in nation building projects."
The nation we're building:
The nation we're building:
November 28, 2025 at 4:51 AM
"We're making unprecedented investments in nation building projects."
The nation we're building:
The nation we're building:
Reposted by Jan Herder
I struggle with all of the “Happy Thanksgiving” posts. I was taught lies in school. I grew up to learn the barbarism of the truth. That we continue to celebrate it as such feels like a betrayal - bc it is. We spend the day together making no mention of the lie.
November 28, 2025 at 4:39 AM
I struggle with all of the “Happy Thanksgiving” posts. I was taught lies in school. I grew up to learn the barbarism of the truth. That we continue to celebrate it as such feels like a betrayal - bc it is. We spend the day together making no mention of the lie.
Interregnum
Effectively there is no *one* person performing the duties of President of the United States right now. We are in an interregnum with an occupied throne.
The fundamental thing to understand about this administration is the president is a grumpy retiree. He has no interest in working anymore. Which leads to him being pissed that he is getting asked a question, pissed he has to show up and work, the scheming viziers running the show, etc..
November 28, 2025 at 2:06 PM
Interregnum