Mariano Koen-Alonso (He/Him)
@mkoenalonso.bsky.social
Marine and fisheries scientist; interested in marine ecology, food webs, and ecosystem-based management among many other things. Posts are my own.
Reposted by Mariano Koen-Alonso (He/Him)
The destruction of US science will be felt worldwide for decades. Take it from @msier.bsky.social, who was the lead program director for the Biological Oceanography program at the US National Science Foundation.
I don’t think people understand how wrecked it is or how hard it will be to rebuild.
November 19, 2025 at 12:18 PM
The destruction of US science will be felt worldwide for decades. Take it from @msier.bsky.social, who was the lead program director for the Biological Oceanography program at the US National Science Foundation.
Reposted by Mariano Koen-Alonso (He/Him)
Excited to share that I’ll be speaking at Memorial University on Friday!
If you’re in St. John’s, make sure to come out. I’ll be talking about how I became a tech critic and how I‘m seeing the current challenges with generative AI and digital sovereignty.
If you’re in St. John’s, make sure to come out. I’ll be talking about how I became a tech critic and how I‘m seeing the current challenges with generative AI and digital sovereignty.
"Becoming an AI Critic", with Paris Marx (Tech Won't Save Us) | Political Science
www.mun.ca
November 19, 2025 at 6:21 PM
Excited to share that I’ll be speaking at Memorial University on Friday!
If you’re in St. John’s, make sure to come out. I’ll be talking about how I became a tech critic and how I‘m seeing the current challenges with generative AI and digital sovereignty.
If you’re in St. John’s, make sure to come out. I’ll be talking about how I became a tech critic and how I‘m seeing the current challenges with generative AI and digital sovereignty.
Reposted by Mariano Koen-Alonso (He/Him)
Nearly every panel I spoke on this year ended with the same question: "What gives you hope?"
My friends, that question expired years ago. (If you need receipts, my book Saving Us is literally a 300-page answer.)
The real question is: How are you PRACTICING hope?
Because Greta is right ..
My friends, that question expired years ago. (If you need receipts, my book Saving Us is literally a 300-page answer.)
The real question is: How are you PRACTICING hope?
Because Greta is right ..
November 19, 2025 at 3:49 PM
Nearly every panel I spoke on this year ended with the same question: "What gives you hope?"
My friends, that question expired years ago. (If you need receipts, my book Saving Us is literally a 300-page answer.)
The real question is: How are you PRACTICING hope?
Because Greta is right ..
My friends, that question expired years ago. (If you need receipts, my book Saving Us is literally a 300-page answer.)
The real question is: How are you PRACTICING hope?
Because Greta is right ..
Reposted by Mariano Koen-Alonso (He/Him)
If we don't rapidly phase out fossil fuels, we can say goodbye to coral reefs, the Greenland and Antarctic icesheets, and permafrost. The results will not be pretty.
3 massive changes you'll see as the climate careens toward tipping points
Scientists are increasingly concerned that the planet is headed for massive, irreversible changes due to global warming. In some cases, those changes have already begun.
www.npr.org
November 19, 2025 at 3:42 PM
If we don't rapidly phase out fossil fuels, we can say goodbye to coral reefs, the Greenland and Antarctic icesheets, and permafrost. The results will not be pretty.
Reposted by Mariano Koen-Alonso (He/Him)
Charts like this paint an overly optimistic picture
Many countries are off track for delivery & are unlikely to fully implement their current policy targets without greater action
E.g UKs Climate Change Commitee asseses that there is insufficient implementation to meet 40%of our emissions target!
Many countries are off track for delivery & are unlikely to fully implement their current policy targets without greater action
E.g UKs Climate Change Commitee asseses that there is insufficient implementation to meet 40%of our emissions target!
November 17, 2025 at 12:49 PM
Charts like this paint an overly optimistic picture
Many countries are off track for delivery & are unlikely to fully implement their current policy targets without greater action
E.g UKs Climate Change Commitee asseses that there is insufficient implementation to meet 40%of our emissions target!
Many countries are off track for delivery & are unlikely to fully implement their current policy targets without greater action
E.g UKs Climate Change Commitee asseses that there is insufficient implementation to meet 40%of our emissions target!
Reposted by Mariano Koen-Alonso (He/Him)
"The @climateactiontracker.org has downgraded Canada's overall rating to ‘Highly Insufficient,’ primarily due to weakened policy ambition, slow implementation, and a widening gap between current emissions levels and Canada’s 2030 target"
climateactiontracker.org/countries/ca...
#Canada 🇨🇦
climateactiontracker.org/countries/ca...
#Canada 🇨🇦
November 14, 2025 at 12:18 AM
"The @climateactiontracker.org has downgraded Canada's overall rating to ‘Highly Insufficient,’ primarily due to weakened policy ambition, slow implementation, and a widening gap between current emissions levels and Canada’s 2030 target"
climateactiontracker.org/countries/ca...
#Canada 🇨🇦
climateactiontracker.org/countries/ca...
#Canada 🇨🇦
Reposted by Mariano Koen-Alonso (He/Him)
The large increase from 2018-2021 was driven by #Climate activism.
Lesson: The widespread mobilisation of the climate emergency movement ( @fridaysforfuture.bsky.social @xrglobal.bsky.social, @sunrisemvmt.bsky.social @endegelaende.bsky.social ) was crucial for creating political salience
Lesson: The widespread mobilisation of the climate emergency movement ( @fridaysforfuture.bsky.social @xrglobal.bsky.social, @sunrisemvmt.bsky.social @endegelaende.bsky.social ) was crucial for creating political salience
Look at storytelling in the news media about climate change over the last 25 years. Online vs print
November 14, 2025 at 1:56 AM
The large increase from 2018-2021 was driven by #Climate activism.
Lesson: The widespread mobilisation of the climate emergency movement ( @fridaysforfuture.bsky.social @xrglobal.bsky.social, @sunrisemvmt.bsky.social @endegelaende.bsky.social ) was crucial for creating political salience
Lesson: The widespread mobilisation of the climate emergency movement ( @fridaysforfuture.bsky.social @xrglobal.bsky.social, @sunrisemvmt.bsky.social @endegelaende.bsky.social ) was crucial for creating political salience
“Promoting new fossil fuel projects is nation burning, not nation building”
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www.nationalobserver.com/2025/10/29/n...
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www.nationalobserver.com/2025/10/29/n...
Climate change will hurt Canada's GDP more than previously thought
New economic research indicates Canada (and all countries) will see a larger hit to GDP thanks to climate change.
www.nationalobserver.com
October 30, 2025 at 9:20 AM
“Promoting new fossil fuel projects is nation burning, not nation building”
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www.nationalobserver.com/2025/10/29/n...
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www.nationalobserver.com/2025/10/29/n...
Reposted by Mariano Koen-Alonso (He/Him)
🚨 The news-media is utterly failing to cover these momentous scientific findings.
The public is not being informed of the danger posed.
The UK chief scientist Dame Angela McLean just highlighted this as an issue of national security - why are no news outlets covering it ?!? 🤯
#EndClimateSilence
The public is not being informed of the danger posed.
The UK chief scientist Dame Angela McLean just highlighted this as an issue of national security - why are no news outlets covering it ?!? 🤯
#EndClimateSilence
October 30, 2025 at 7:31 AM
🚨 The news-media is utterly failing to cover these momentous scientific findings.
The public is not being informed of the danger posed.
The UK chief scientist Dame Angela McLean just highlighted this as an issue of national security - why are no news outlets covering it ?!? 🤯
#EndClimateSilence
The public is not being informed of the danger posed.
The UK chief scientist Dame Angela McLean just highlighted this as an issue of national security - why are no news outlets covering it ?!? 🤯
#EndClimateSilence
The devil is always in the details.. and this is a big detail.
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This @royalsociety.org report has not received nearly the attention it deserves.
Key finding: "most current approaches to economic assessments of impacts of #climate change do not reflect the severity of consequences that are suggested by the latest physical climate science & evidence on impacts" 😬
Key finding: "most current approaches to economic assessments of impacts of #climate change do not reflect the severity of consequences that are suggested by the latest physical climate science & evidence on impacts" 😬
Climate change economics: Summary report | Royal Society
A summary report on a Royal Society climate change economics conference.
royalsociety.org
October 27, 2025 at 8:52 AM
The devil is always in the details.. and this is a big detail.
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At risk of oversimplifying a complex negotiation, my initial reaction is that you don’t back down when something seems to be working. If Ontario blinks, Trump will keep pulling these stunts even more often, & increase his tantrums rhetoric… if that’s even possible.
www.thestar.com/business/ont...
www.thestar.com/business/ont...
Ontario will pull ads that triggered Trump in order to restart trade talks, Ford says
OTTAWA - Ontario is hitting pause on its short-lived anti-tariff television ad campaign in the United States on Monday so that Canada-U.S. trade talks can resume, Ontario Premier Doug Ford
www.thestar.com
October 25, 2025 at 6:57 PM
At risk of oversimplifying a complex negotiation, my initial reaction is that you don’t back down when something seems to be working. If Ontario blinks, Trump will keep pulling these stunts even more often, & increase his tantrums rhetoric… if that’s even possible.
www.thestar.com/business/ont...
www.thestar.com/business/ont...
Reposted by Mariano Koen-Alonso (He/Him)
Really important paper led by my @iiasa.ac.at colleague Alex Nauels www.nature.com/articles/s41...
“The difference between decisive climate action today and continued high emissions is not just measured in degrees of warming but also in meters of sea-level rise” 👏👏👏
“The difference between decisive climate action today and continued high emissions is not just measured in degrees of warming but also in meters of sea-level rise” 👏👏👏
Multi-century global and regional sea-level rise commitments from cumulative greenhouse gas emissions in the coming decades - Nature Climate Change
It is important to understand how much long-term sea-level rise is already committed due to historical and near-term emissions. Here the authors use a modelling framework to show how decisions on glob...
www.nature.com
October 24, 2025 at 10:40 AM
Really important paper led by my @iiasa.ac.at colleague Alex Nauels www.nature.com/articles/s41...
“The difference between decisive climate action today and continued high emissions is not just measured in degrees of warming but also in meters of sea-level rise” 👏👏👏
“The difference between decisive climate action today and continued high emissions is not just measured in degrees of warming but also in meters of sea-level rise” 👏👏👏
Fair analysis.
@mark-carney.bsky.social credentials led many to believe that he would advance climate policies. Instead, he is dismantling them.
Right now climate action is no longer a clear distinction between major political parties in Canada.
Sorry kids...
www.cbc.ca/news/politic...
@mark-carney.bsky.social credentials led many to believe that he would advance climate policies. Instead, he is dismantling them.
Right now climate action is no longer a clear distinction between major political parties in Canada.
Sorry kids...
www.cbc.ca/news/politic...
ANALYSIS | Will Mark Carney deliver on the climate values he preached as a central banker? | CBC News
Mark Carney spent a decade as one of the most credible voices on climate action and the economy. Now as prime minister, he is scrapping emissions reductions policies, backing LNG projects and talking ...
www.cbc.ca
October 25, 2025 at 10:13 AM
Fair analysis.
@mark-carney.bsky.social credentials led many to believe that he would advance climate policies. Instead, he is dismantling them.
Right now climate action is no longer a clear distinction between major political parties in Canada.
Sorry kids...
www.cbc.ca/news/politic...
@mark-carney.bsky.social credentials led many to believe that he would advance climate policies. Instead, he is dismantling them.
Right now climate action is no longer a clear distinction between major political parties in Canada.
Sorry kids...
www.cbc.ca/news/politic...
Reposted by Mariano Koen-Alonso (He/Him)
"If we fail to protect permafrost ecosystems, the consequences for human rights, biosphere integrity, and global #climate will be severe. The policy implications are clear: the faster we reduce human emissions and draw down atmospheric CO2, the more of the permafrost domain we can save."
Frontiers | We Must Stop Fossil Fuel Emissions to Protect Permafrost Ecosystems
Climate change is an existential threat to the vast global permafrost domain. The diverse human cultures, ecological communities, and biogeochemical cycles o...
www.frontiersin.org
October 24, 2025 at 11:47 PM
"If we fail to protect permafrost ecosystems, the consequences for human rights, biosphere integrity, and global #climate will be severe. The policy implications are clear: the faster we reduce human emissions and draw down atmospheric CO2, the more of the permafrost domain we can save."
This is the key problem: Regulatory Capture. This doesn’t mean that if you address it solutions will be easy; they still will be darn hard. Trade-offs & difficult decisions will still be made, but fair examination of evidence will be behind them. At last govs will be acting in the public interest.
"The biggest barrier to the global energy transition is the fossil fuel industry and its relationship with governments."
Australia fiddles with fossil gas while the country swelters in record heat. It doesn’t make sense | Bill Hare
October 25, 2025 at 9:17 AM
This is the key problem: Regulatory Capture. This doesn’t mean that if you address it solutions will be easy; they still will be darn hard. Trade-offs & difficult decisions will still be made, but fair examination of evidence will be behind them. At last govs will be acting in the public interest.
Interesting perspective by @maxfawcett.bsky.social about the future of oil & gas in Canada, and the political poker game that is being played around it.
Danielle Smith’s pipeline still doesn’t have a business case www.nationalobserver.com/2025/10/23/o...
Danielle Smith’s pipeline still doesn’t have a business case www.nationalobserver.com/2025/10/23/o...
Danielle Smith’s pipeline still doesn’t have a business case
The biggest obstacle standing in the way of another pipeline to the West Coast isn't the tanker ban or federal climate policies. It's oil prices and the nature of the businesses that rely on them for ...
www.nationalobserver.com
October 24, 2025 at 12:25 PM
Interesting perspective by @maxfawcett.bsky.social about the future of oil & gas in Canada, and the political poker game that is being played around it.
Danielle Smith’s pipeline still doesn’t have a business case www.nationalobserver.com/2025/10/23/o...
Danielle Smith’s pipeline still doesn’t have a business case www.nationalobserver.com/2025/10/23/o...
Surprise, surprise...
Danielle Smith dodges climate science in parliament www.nationalobserver.com/2025/10/23/n...
Danielle Smith dodges climate science in parliament www.nationalobserver.com/2025/10/23/n...
Danielle Smith dodges climate science in parliament
Are human activities, such as burning fossil fuels, driving climate change? Alberta Premier Danielle Smith says she doesn't know, as the province plans to double oil production and build pipelines in ...
www.nationalobserver.com
October 24, 2025 at 11:42 AM
Surprise, surprise...
Danielle Smith dodges climate science in parliament www.nationalobserver.com/2025/10/23/n...
Danielle Smith dodges climate science in parliament www.nationalobserver.com/2025/10/23/n...
Reposted by Mariano Koen-Alonso (He/Him)
“Multiverse analyses require thorough, theory-based model selection. Otherwise, they become a ‘dangerous tool’ that drowns valid models in misspecified ones, needlessly eroding trust in science.”
A plea for thoughtful models by @kauspurg.bsky.social
#MetaSci
A plea for thoughtful models by @kauspurg.bsky.social
#MetaSci
October 21, 2025 at 4:18 PM
“Multiverse analyses require thorough, theory-based model selection. Otherwise, they become a ‘dangerous tool’ that drowns valid models in misspecified ones, needlessly eroding trust in science.”
A plea for thoughtful models by @kauspurg.bsky.social
#MetaSci
A plea for thoughtful models by @kauspurg.bsky.social
#MetaSci
Reposted by Mariano Koen-Alonso (He/Him)
"Crossing the first global tipping point should not be an excuse to lock in geoengineering, with its empty promises & spiralling risks. Instead, it should be the moment we pivot towards a fundamental shift in thinking & action about our societies, economies & politics."
The prospect of climate tipping points freaks Earth system scientists out - for obvious reasons. But there is another concern about them; risks of activating tipping points is used to argue for geoengineering. My latest with @mandibissett.bsky.social
www.technosphere.earth/climate-tipp...
www.technosphere.earth/climate-tipp...
Climate tipping points should not be used to justify geoengineering
We are at a fork in the road. Crossing the first global tipping point should not be an excuse to lock in geoengineering, with its empty promises and spiralling risks.
www.technosphere.earth
October 21, 2025 at 12:21 PM
"Crossing the first global tipping point should not be an excuse to lock in geoengineering, with its empty promises & spiralling risks. Instead, it should be the moment we pivot towards a fundamental shift in thinking & action about our societies, economies & politics."
Reposted by Mariano Koen-Alonso (He/Him)
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...
This made me laugh more than I care to admit 🤣🤣
You gently run your hand through the rack. You can feel it—pure cotton, rich wool, Irish linen. The plump buttonholes are handsewn; the buttons attached with a firm shank. You flip the price tag over. It's affordable
You buy the jacket and go home, which is only 15 mins away. Your apt is $600/month
You buy the jacket and go home, which is only 15 mins away. Your apt is $600/month
October 15, 2025 at 10:57 AM
This made me laugh more than I care to admit 🤣🤣
Reposted by Mariano Koen-Alonso (He/Him)
For so long, fossil fuel projects have said their contribution to climate change is "negligible".
Turns out that's wrong.
Our research in NPJ Climate Action proves it.
Every tonne of CO2 matters.
@21stcenturyweather.bsky.social
@minderoo.bsky.social
#climatechange
www.nature.com/articles/s44...
Turns out that's wrong.
Our research in NPJ Climate Action proves it.
Every tonne of CO2 matters.
@21stcenturyweather.bsky.social
@minderoo.bsky.social
#climatechange
www.nature.com/articles/s44...
Quantifying the regional to global climate impacts of individual fossil fuel projects to inform decision-making - npj Climate Action
npj Climate Action - Quantifying the regional to global climate impacts of individual fossil fuel projects to inform decision-making
www.nature.com
October 13, 2025 at 10:07 AM
For so long, fossil fuel projects have said their contribution to climate change is "negligible".
Turns out that's wrong.
Our research in NPJ Climate Action proves it.
Every tonne of CO2 matters.
@21stcenturyweather.bsky.social
@minderoo.bsky.social
#climatechange
www.nature.com/articles/s44...
Turns out that's wrong.
Our research in NPJ Climate Action proves it.
Every tonne of CO2 matters.
@21stcenturyweather.bsky.social
@minderoo.bsky.social
#climatechange
www.nature.com/articles/s44...
Really insightful (and fun) conversation on what AI is and the risks (and benefits) that come with it. Worth a listen.
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podcasts.apple.com/ca/podcast/t...
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podcasts.apple.com/ca/podcast/t...
AI: What Could Go Wrong? with Geoffrey Hinton
Podcast Episode · The Weekly Show with Jon Stewart · 2025-10-09 · 1h 43m
podcasts.apple.com
October 13, 2025 at 11:02 AM
Really insightful (and fun) conversation on what AI is and the risks (and benefits) that come with it. Worth a listen.
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podcasts.apple.com/ca/podcast/t...
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podcasts.apple.com/ca/podcast/t...
Reposted by Mariano Koen-Alonso (He/Him)
"Carney is avoiding answering whether Canada will meet its 2030 Paris Agreement target. His attendance at the upcoming COP30... has not been confirmed, & he unexpectedly withdrew from the UN Secretary General’s recent climate summit — all of which suggests he’s not prioritizing #climate action"
Mark Carney’s climate inaction is at odds with his awareness of climate change’s existential threat
Climate action no longer seems to be a priority for Prime Minister Mark Carney, despite his previous activism. This is bad news for Canadians and the climate.
theconversation.com
October 10, 2025 at 11:59 PM
"Carney is avoiding answering whether Canada will meet its 2030 Paris Agreement target. His attendance at the upcoming COP30... has not been confirmed, & he unexpectedly withdrew from the UN Secretary General’s recent climate summit — all of which suggests he’s not prioritizing #climate action"