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Posts by Heather Short

This is the most important thing you will read today – and probably the whole year, honestly.

We cannot let the AMOC collapse. For one thing it will make Iceland uninhabitable, and I would really like my children and grandchildren not to become refugees. But the effects will be almost everywhere.

2 days ago 429 177 13 7
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Who’d have thought a fossil-fuel shill like Trump would be the one to spark a green revolution? | George Monbiot The US attack on Iran has made the need for renewable energy inarguable, says Guardian columnist George Monbiot

It's the opposite of his intention, but the Idiot Emperor is forcing the world off fossil fuels. This week's column.
www.theguardian.com/commentisfre...

4 days ago 1172 375 64 31
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We’re letting big corporations gamble with our lives. Act now, or the food could run out | George Monbiot The fragility of the global food system fills me with dread – and the war with Iran has exposed just how close to collapse it is, says Guardian columnist George Monbiot

"Just as we make ourselves more energy-secure by switching from fossil fuels to renewables, we make ourselves more food-secure by switching from animals to plants." - @georgemonbiot.bsky.social

2 days ago 332 131 5 9
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A call to climate justice champions — run! — for office With our world on fire, we need to elect more political firefighters. So, find, recruit and support your local climate justice champion. Send them this article as a way of saying, “I believe in you.” ...

With Prime Minister Carney having secured his coveted majority, and a federal election likely three years away, now may seem an odd time to issue this appeal. But I beg to differ:

Here's my call to climate justice champions — run! — for office... 😊 👇 www.nationalobserver.com/2026/04/14/o...

5 days ago 31 10 2 2

just a note: while Quebec does not have UBI, they do have universal health care, which is a floor of sorts that probably helped create AdP.

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"a world with universal basic income is more meritocratic than a world without one, because luck-based distribution — which is what we have now — throws away most of the talent in the room."

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The clearest evidence that the increase in atmospheric CO₂ is due to humans is in carbon isotopes. Fossil fuels have no ¹⁴C and are depleted in ¹³C. As we burn them, the ratio of ¹⁴C and ¹³C relative to ¹²C in the atmosphere drops (look up the Suess Effect).

5 days ago 75 35 6 3

Claims and ideas which happen to favour the ruling class don't dominate public life by accident. They're paid for by oligarchs and corporations then promoted by media outlets other oligarchs and corporations own. Once they've been drummed into our ears enough, they're internalised as "common sense".

1 week ago 851 265 30 11
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Hannah Daly: When the crisis is caused by oil dependence, the solution isn’t cheaper oil The tactics used by protesters show that our vulnerability is the fossil fuel system itself

Hannah Daly: When the crisis is caused by oil dependence, the solution isn’t cheaper oil

6 days ago 249 62 3 7
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Critical Atlantic current significantly more likely to collapse than thought Scientists say finding is ‘very concerning’ as collapse would be catastrophic for Europe, Africa and the Americas

Critical Atlantic current significantly more likely to collapse than thought

- Scientists say finding is ‘very concerning’ as collapse would be catastrophic for Europe, Africa and the Americas

#AMOC #climatecrisis
Story by me

www.theguardian.com/environment/...

1 week ago 189 135 4 29
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Shutdown of northern Atlantic overturning after 2100 following deep mixing collapse in CMIP6 projections Shutdown of northern Atlantic overturning after 2100 following deep mixing collapse in CMIP6 projections, Drijfhout, Sybren, Angevaare, Joran R, Mecking, Jennifer, van Westen, René M, Rahmstorf, Stefan

The #AMOC by 2100 will thus be so weak (~8 Sv) that it is very likely on the way to full shutdown, as our study last year showed: iopscience.iop.org/article/10.1...
In my view, this now makes a full #AMOC shutdown more likely than not. Definitely not a low likelihood risk, as we used to think.

1 week ago 222 110 10 8
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Critical Atlantic current significantly more likely to collapse than thought Scientists say finding is ‘very concerning’ as collapse would be catastrophic for Europe, Africa and the Americas

“I now am increasingly worried that we may well pass that Amoc shutdown tipping point, where it becomes inevitable, in the middle of this century, which is quite close.”
www.theguardian.com/environment/...

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Longer summers are not just more time to spend eating watermelon. No! It’s far more sinister! | First Dog on the Moon We have done so much climate change research, if they made a big pile of it you could climb up to the afternoon sun and tape a sheet over it to cool things down

www.theguardian.com/commentisfre...

1 week ago 1 0 0 0
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Abundance gets it wrong | Green Agenda Simon Copland reviews Klein and Thompson’s Abundance. The book sounds progressive but delivers repackaged trickle-down economics, blaming NIMBYs while ignoring corporate power and capitalist inequalit...

Really enjoyed this detailed autopsy by Simon Copland of the “Abundance” book: “Abundance Gets It Wrong”

greenagenda.org.au/2025/09/abun...

1 week ago 17 9 0 1
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AMOC collapse could turn Southern Ocean into carbon source, adding 0.2°C to global warming A shutdown of the Atlantic Meridional Overturning Circulation (AMOC) could trigger a substantial release of stored ocean carbon into the atmosphere over hundreds of years, according to a new study tha...

"In one scenario at CO₂ concentrations of 450ppm —last experienced by Earth several million years ago, when polar ice was significantly reduced—Antarctic temperatures rise by 6°C while Arctic temperatures drop by 7°C due to #AMOC collapse"

We're now at ~430ppm & rising 🙈

#ClimateEmergency

1 week ago 154 104 1 4
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Just 0.001% hold three times the wealth of poorest half of humanity, report finds Data from World Inequality Report also showed top 10% of income-earners earn more than the other 90%

'Fewer than 60,000 people – 0.001% of the world’s population – control three times as much wealth as the entire bottom half of humanity, according to a report that argues global inequality has reached such extremes that urgent action has become essential'
www.theguardian.com/inequality/2...

4 months ago 1162 596 40 36

Climate denial and anti-vaccination are not popular ideas. Substack is actively and forcefully promoting these people and their views for blatantly ideological reasons

1 week ago 80 18 1 0

A Japanese researcher just interrupted me in the restroom and said, “are you David Ho?” He proceeded to tell me how much he enjoyed this piece I wrote in Nature. You should read it too. 😄

1 week ago 456 70 7 2

I don't know why this is so hard for some people to grasp. If we extend our use of fossil gas, rather than going all-out for grid batteries, heat pumps and induction hobs, we extend our dependence on *foreign* sources of gas, regardless of whether we also use the UK's last remaining reserves. 🧵

1 week ago 4877 1202 153 43
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And, of course, fossil energy and climate change are both affordability issues — which means you can’t solve for affordability (or even set expectations) without taking on fossil energy and climate change.

1 week ago 8 5 1 0
Trends in Concern About Global Warming or Climate Change, by Political Party
I'm going to read you a list of
environmental problems. As I read each one, please tell me if you personally worry about this problem a great deal, a fair amount, only a little or not at all. How much do you personally worry about global warming or climate change?
% Worry a great deal
- Democrats - 72%- Independents 46%
- Republicans 6%
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Trends in Concern About Global Warming or Climate Change, by Political Party I'm going to read you a list of environmental problems. As I read each one, please tell me if you personally worry about this problem a great deal, a fair amount, only a little or not at all. How much do you personally worry about global warming or climate change? % Worry a great deal - Democrats - 72%- Independents 46% - Republicans 6% 80% 72 70 60 50 • 46 40 30 20 10 2002 2010 2018 2026

Americans DO care about #ClimateChange!

Don’t listen to the partisans who lie about this.

72% of Democrats & 46% of independents “worry a great deal” about climate.

And 68% of Democrats & 47% of Independents expect global heating to threaten their way of life NOW or in the future.

1 week ago 119 50 8 4
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First Conference on Transitioning Away from Fossil Fuels Colombia and the Netherlands will host the First Conference on Transitioning Away from Fossil Fuels. The Conference is designed as a space for countries, subnational governments and other stakeholders...

Interesting. An international conference specifically about transitioning away from fossil fuels. This is a way for countries that get it to cooperate outside the sclerotic UNFCCC framework. Worth watching.

1 week ago 172 59 4 3

I’m going to block this AI bot doing PR for CDR, but first I will say that the majority of CDR in mitigation pathways is there so models can show us hitting our targets while burning fossil fuels at massive scales.

And this vision is justified only by technooptimism and unicorn farts.

🧵

1 week ago 35 8 2 1
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Climate communications New research finds that ‘fear’ predicts increased support for climate policy – but ‘dread’ sees it fall.

Such an important topic: new study shows feeling fearful appears to motivate people and is linked with greater support for #climate policies, while dread is associated with lower support

#ClimateComms #ClimatePolicy #Language #Media #Psychology

www.mygreenpod.com/articles/cli...

1 month ago 6 4 1 1

Something is starting to shift.

Millions of people are waking up to what the fossil fuel lobby has spent decades trying to hide: clean energy is cheaper, safer and doesn't need a single bomb dropped to keep the lights on.

1 week ago 290 85 3 1
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UK ‘green’ jet fuel imports linked to illegal Amazon deforestation A major supplier of ‘green’ airline fuel to the UK has sourced beef fat linked to illegal Amazon deforestation.

NEW: A major supplier of ‘green’ airline fuel to the UK has sourced beef fat linked to illegal Amazon deforestation

Our new investigation 🐄 🌳 ✈️:

unearthed.greenpeace.org/2026/04/10/u...

1 week ago 99 66 8 11

You, an individual, cannot "fix" the whole world. You can act at the scale of your life. You should act at the scale of your life.

2 months ago 4095 1327 37 0
American science is at risk not because of budget cuts, but because of executive interference
American science is at risk not because of budget cuts, but because of executive interference In this clip excerpted from my recent livestream, I explain why American science is currently at existential risk, and how the current crisis stems not primarily from budget cuts from Congress, but instead from direct interference from the executive branch. I discuss the immediate implications of th

I've excerpted a ~5 minute segment from my recent livestream discussing my deepening concerns regarding on the ongoing (and accelerating) threats not only to weather and climate science, but American science leadership and continuity at large.

1 week ago 245 69 5 6
Wildlife trade drives animal-to-human pathogen transmission over 40 years

Wildlife trade drives animal-to-human pathogen transmission over 40 years

New in @science.org ‼️ In the most comprehensive study to date, we show that wildlife trade is driving animal-to-human zoonotic spillover at a planetary scale, with +1 spillover per host every 10 years. Live animal markets and illegal trade pose even greater risks. 🔓 www.science.org/doi/10.1126/...

1 week ago 685 353 10 23
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Canada may spend billions on LNG projects that will lock us into higher prices and delay real climate solutions.

Apr 13-18 people across the country are speaking up:
❌ No more public $ for fossil fuel giants
✅ Invest in clean energy that benefits communities

Join us: linktr.ee/NotInOurNati...

2 weeks ago 36 17 0 0