Dan Visioni
@danvisioni.bsky.social
Climate scientist studying aerosols, chemistry, radiation, climate & society from Volcanoes 🌋and Climate Intervention. Assistant Professor at Cornell EAS, from 🇮🇹proudly🏳️🌈 More at https://dan-visioni.github.io/ and https://www.wcrp-climate.org/ci-overview
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Dan Visioni
@danvisioni.bsky.social
· Jan 30
We’re being told (or it is being implied) that we shouldn’t make political statements right now. But here’s the thing: respecting and recognizing the humanity of our transgender brothers and sisters (and of the whole LGBTQ community) is a matter of humanity, and one I am not willing to be silent on.
For unfathomable reasons, the last class of the semester makes me *so emotional*, and that, coupled with the fact the students have the sweet yet terrible vice to clap when the last class ends and I say goodbye means I always conclude the semester muttering inaudible things trying not to cry.
November 24, 2025 at 10:02 PM
For unfathomable reasons, the last class of the semester makes me *so emotional*, and that, coupled with the fact the students have the sweet yet terrible vice to clap when the last class ends and I say goodbye means I always conclude the semester muttering inaudible things trying not to cry.
Reposted by Dan Visioni
COP30 text failures are more than one: failing to mention the necessity of fossil-fuel phase-out is an obvious one, but gaslighting the world over the fact that there is a chance of “keeping 1.5°C within reach” is another. The latter however is not any lighter: it directly enables the former.
November 22, 2025 at 11:25 PM
COP30 text failures are more than one: failing to mention the necessity of fossil-fuel phase-out is an obvious one, but gaslighting the world over the fact that there is a chance of “keeping 1.5°C within reach” is another. The latter however is not any lighter: it directly enables the former.
COP30 text failures are more than one: failing to mention the necessity of fossil-fuel phase-out is an obvious one, but gaslighting the world over the fact that there is a chance of “keeping 1.5°C within reach” is another. The latter however is not any lighter: it directly enables the former.
November 22, 2025 at 11:25 PM
COP30 text failures are more than one: failing to mention the necessity of fossil-fuel phase-out is an obvious one, but gaslighting the world over the fact that there is a chance of “keeping 1.5°C within reach” is another. The latter however is not any lighter: it directly enables the former.
When one reads reports/articles about “We’re on track for 2.6 degrees of warming” it would be useful to bear in mind that’s not peak warming that will be reached, that’s just an arbitrary cutoff value at a nice round date, 2100.
November 15, 2025 at 4:51 PM
When one reads reports/articles about “We’re on track for 2.6 degrees of warming” it would be useful to bear in mind that’s not peak warming that will be reached, that’s just an arbitrary cutoff value at a nice round date, 2100.
www.rollingstone.com/politics/pol...
@hollyjeanbuck.bsky.social, @davidho.bsky.social and I were interviewed by @rollingstone.com about the Trump admin and Climate Intervention research. Compared to initial hopes/worries, Trump admin has shown zero interest to support any kind of climate research.
@hollyjeanbuck.bsky.social, @davidho.bsky.social and I were interviewed by @rollingstone.com about the Trump admin and Climate Intervention research. Compared to initial hopes/worries, Trump admin has shown zero interest to support any kind of climate research.
Trump Is Kneecapping Some of the Boldest Plans to Fight Climate Change
Donald Trump's assault on climate innovation is also affecting scientists researching geoengineering methods like carbon-dioxide removal.
www.rollingstone.com
November 13, 2025 at 9:44 PM
www.rollingstone.com/politics/pol...
@hollyjeanbuck.bsky.social, @davidho.bsky.social and I were interviewed by @rollingstone.com about the Trump admin and Climate Intervention research. Compared to initial hopes/worries, Trump admin has shown zero interest to support any kind of climate research.
@hollyjeanbuck.bsky.social, @davidho.bsky.social and I were interviewed by @rollingstone.com about the Trump admin and Climate Intervention research. Compared to initial hopes/worries, Trump admin has shown zero interest to support any kind of climate research.
Reposted by Dan Visioni
Giving a bully your lunch money doesn't make them leave you alone. It shows them you're an easy mark and encourages them to demand more.
Appeasing fascists doesn't make them less fascist. It shows them you're weak and encourages them to demand more.
It's only ONE OF THE MOST REPEATED LESSONS EVER!
Appeasing fascists doesn't make them less fascist. It shows them you're weak and encourages them to demand more.
It's only ONE OF THE MOST REPEATED LESSONS EVER!
November 7, 2025 at 5:33 PM
Giving a bully your lunch money doesn't make them leave you alone. It shows them you're an easy mark and encourages them to demand more.
Appeasing fascists doesn't make them less fascist. It shows them you're weak and encourages them to demand more.
It's only ONE OF THE MOST REPEATED LESSONS EVER!
Appeasing fascists doesn't make them less fascist. It shows them you're weak and encourages them to demand more.
It's only ONE OF THE MOST REPEATED LESSONS EVER!
Reposted by Dan Visioni
We have more than enough evidence to conclude that the Trump administration
-is committed to attacking academia
-cannot be trusted to honor its commitments, nor to follow court orders
-has weaponized "fighting antisemitism" in bad faith
-will use Cornell's appeasement to go after other universities
-is committed to attacking academia
-cannot be trusted to honor its commitments, nor to follow court orders
-has weaponized "fighting antisemitism" in bad faith
-will use Cornell's appeasement to go after other universities
November 7, 2025 at 5:30 PM
We have more than enough evidence to conclude that the Trump administration
-is committed to attacking academia
-cannot be trusted to honor its commitments, nor to follow court orders
-has weaponized "fighting antisemitism" in bad faith
-will use Cornell's appeasement to go after other universities
-is committed to attacking academia
-cannot be trusted to honor its commitments, nor to follow court orders
-has weaponized "fighting antisemitism" in bad faith
-will use Cornell's appeasement to go after other universities
Reposted by Dan Visioni
Cornell agreed to pay $30m, hand over admissions data with demographic breakdowns, produce annual "campus climate" surveys to check on antisemitism and changes "since October of 2023," and—here's the dumbest part they agreed to—that the govt can open new investigations whenever it wants.
Appeasers.
Appeasers.
Cornell has reached an agreement with the federal government to restore our funding:
statements.cornell.edu/2025/2025110...
statements.cornell.edu/2025/2025110...
An agreement to restore Cornell’s federal research funding | University Statements | Cornell University
statements.cornell.edu
November 7, 2025 at 5:19 PM
Cornell agreed to pay $30m, hand over admissions data with demographic breakdowns, produce annual "campus climate" surveys to check on antisemitism and changes "since October of 2023," and—here's the dumbest part they agreed to—that the govt can open new investigations whenever it wants.
Appeasers.
Appeasers.
As an educator at Cornell, I feel like it's my duty to just say "bribes are bad, don't pay bribes".
Breaking News: Cornell University reached an agreement with the Trump administration that would restore hundreds of millions in funding to the university. It's expected to pay a $30 million fine to the government and to invest $30 million in agriculture and farming programs.
Cornell Reaches Deal with Trump Administration to Restore Research Funds
The Ivy League university had warned of layoffs after the Trump administration stripped it of funds this year. The cuts were among the deepest in higher education.
nyti.ms
November 7, 2025 at 5:13 PM
As an educator at Cornell, I feel like it's my duty to just say "bribes are bad, don't pay bribes".
Please, please, please, stop with the bad cheeky titles with the word "cop", I beg all of you. There have been THIRTY YEARS of those.
November 7, 2025 at 2:55 PM
Please, please, please, stop with the bad cheeky titles with the word "cop", I beg all of you. There have been THIRTY YEARS of those.
I just finished this fantastic trilogy of 80s feminist sci-fi (I’d never heard about before going to my local bookstore!) that explores a future world where the 19th amendment has been repelled [then many wacky things happen in pure 80s sci-fi style]. A good reminder of how flimsy progress is..
November 6, 2025 at 2:04 PM
I just finished this fantastic trilogy of 80s feminist sci-fi (I’d never heard about before going to my local bookstore!) that explores a future world where the 19th amendment has been repelled [then many wacky things happen in pure 80s sci-fi style]. A good reminder of how flimsy progress is..
www.technologyreview.com/2025/11/04/1...
In @technologyreview.com, @davidkeith.bsky.social and I explain why, especially if you think solar geoengineering is worth exploring, you should be skeptical of for-profit attempts. We bounced around thoughts for a while, but it got more urgent obviously.
In @technologyreview.com, @davidkeith.bsky.social and I explain why, especially if you think solar geoengineering is worth exploring, you should be skeptical of for-profit attempts. We bounced around thoughts for a while, but it got more urgent obviously.
Why the for-profit race into solar geoengineering is bad for science and public trust
Two scientists argue that the growing commercial efforts to counter climate change by reflecting away sunlight will thwart responsible research in the field.
www.technologyreview.com
November 4, 2025 at 3:58 PM
www.technologyreview.com/2025/11/04/1...
In @technologyreview.com, @davidkeith.bsky.social and I explain why, especially if you think solar geoengineering is worth exploring, you should be skeptical of for-profit attempts. We bounced around thoughts for a while, but it got more urgent obviously.
In @technologyreview.com, @davidkeith.bsky.social and I explain why, especially if you think solar geoengineering is worth exploring, you should be skeptical of for-profit attempts. We bounced around thoughts for a while, but it got more urgent obviously.
Reposted by Dan Visioni
In an op-ed for TR, @davidkeith.bsky.social & @danvisioni.bsky.social voice deep concerns about Stardust & other for-profits racing into solar geoengineering — and asserting claims that, they argue, the science doesn't support.
Why the for-profit race into solar geoengineering is bad for science and public trust
Two scientists argue that the growing commercial efforts to counter climate change by reflecting away sunlight will thwart responsible research in the field.
www.technologyreview.com
November 4, 2025 at 2:50 PM
In an op-ed for TR, @davidkeith.bsky.social & @danvisioni.bsky.social voice deep concerns about Stardust & other for-profits racing into solar geoengineering — and asserting claims that, they argue, the science doesn't support.
Reposted by Dan Visioni
For our department Halloween party, I went as scary Stratospheric Aerosol Injection (SAI) - mostly to tease @danvisioni.bsky.social
October 31, 2025 at 1:31 PM
For our department Halloween party, I went as scary Stratospheric Aerosol Injection (SAI) - mostly to tease @danvisioni.bsky.social
On October 6-9, the World Climate Research Programme Lighthouse Activity on Climate Intervention Research (www.wcrp-climate.org/ci-overview) and the Core Activity on Atmospheric Processes and their Role in Climate (APARC) co-hosted a Virtual Workshop Series on Stratospheric Aerosol Injection (SAI).
Research to Inform Decisions about Climate Intervention
Research on Climate Intervention
www.wcrp-climate.org
October 27, 2025 at 3:13 PM
On October 6-9, the World Climate Research Programme Lighthouse Activity on Climate Intervention Research (www.wcrp-climate.org/ci-overview) and the Core Activity on Atmospheric Processes and their Role in Climate (APARC) co-hosted a Virtual Workshop Series on Stratospheric Aerosol Injection (SAI).
Reposted by Dan Visioni
Ultimately, I agree I don’t expect much from founders (public & private). I prefer expecting much more from bottom-up efforts from within the community to be ethical and accountable, which is why we wrote the AGU guidelines.. www.agu.org/learn-about-...
Ethical Framework for Climate Intervention Research| AGU
AGU describes its plans to lead the development of an ethical framework to guide the research and possible deployment of climate change intervention measures.
www.agu.org
October 25, 2025 at 10:57 PM
Ultimately, I agree I don’t expect much from founders (public & private). I prefer expecting much more from bottom-up efforts from within the community to be ethical and accountable, which is why we wrote the AGU guidelines.. www.agu.org/learn-about-...
Reposted by Dan Visioni
In May, with UNEP+WMO we organized a consultive dialogue with countries & scientists that was a great success in bringing together multiple levels of concerns (www.unep.org/events/works... the report). It was challenging, and a huge effort, but one thing I didn’t feel at the end was “shame”.
Consultative Workshop and Science-Policy Dialogue on Solar Radiation Modification
The Joint UNEP-WMO Consultative Workshop and Science-Policy Dialogue on Solar Radiation Modification will take place at WMO Headquarters in Geneva and co-facilitated together with the International Sc...
www.unep.org
October 25, 2025 at 10:42 PM
In May, with UNEP+WMO we organized a consultive dialogue with countries & scientists that was a great success in bringing together multiple levels of concerns (www.unep.org/events/works... the report). It was challenging, and a huge effort, but one thing I didn’t feel at the end was “shame”.
Reposted by Dan Visioni
I’ve never been shy nor ashamed of the fact that the core of my research is around SRM. I think there is merit in research: if we can show there are ways to ameliorate current and future climate change, we should know. If there aren’t, or if SRM could be used to make things worse, we should know.
October 25, 2025 at 2:43 AM
I’ve never been shy nor ashamed of the fact that the core of my research is around SRM. I think there is merit in research: if we can show there are ways to ameliorate current and future climate change, we should know. If there aren’t, or if SRM could be used to make things worse, we should know.
I’ve never been shy nor ashamed of the fact that the core of my research is around SRM. I think there is merit in research: if we can show there are ways to ameliorate current and future climate change, we should know. If there aren’t, or if SRM could be used to make things worse, we should know.
October 25, 2025 at 2:43 AM
I’ve never been shy nor ashamed of the fact that the core of my research is around SRM. I think there is merit in research: if we can show there are ways to ameliorate current and future climate change, we should know. If there aren’t, or if SRM could be used to make things worse, we should know.
I’m sure is just a coincidence, but the Syracuse Orchestra today is playing Beethoven’s Seventh, which premiered at a concert celebrating Napoleon’s defeat. He dedicated the Third to Napoleon as a champion of liberty, but ripped the dedication from the manuscript when he declared himself Emperor.
October 19, 2025 at 12:17 AM
I’m sure is just a coincidence, but the Syracuse Orchestra today is playing Beethoven’s Seventh, which premiered at a concert celebrating Napoleon’s defeat. He dedicated the Third to Napoleon as a champion of liberty, but ripped the dedication from the manuscript when he declared himself Emperor.
I just finished reading “The Terraformers” by @annaleen.bsky.social and it made me so happy I need to share it here. It is rare to find such forward-looking, powerful sci-fi that manages to be hopeful about humanity while not shying away from its problems.
October 4, 2025 at 9:38 PM
I just finished reading “The Terraformers” by @annaleen.bsky.social and it made me so happy I need to share it here. It is rare to find such forward-looking, powerful sci-fi that manages to be hopeful about humanity while not shying away from its problems.
Dakota Gruener and I have a new piece out in the new issue of @worksinprogress.bsky.social : worksinprogress.co/issue/sunscr...
Sunscreen for the planet - Works in Progress Magazine
The world is warming faster than we can cut emissions. But volcanoes already been cool the planet accidentally. If nature can cool the Earth, maybe we can.
worksinprogress.co
September 18, 2025 at 6:10 PM
Dakota Gruener and I have a new piece out in the new issue of @worksinprogress.bsky.social : worksinprogress.co/issue/sunscr...
Reposted by Dan Visioni
Beautifully illustrated and clear write-up on SRM by @danvisioni.bsky.social and Dakota Gruener.
worksinprogress.co/issue/sunscr...
worksinprogress.co/issue/sunscr...
Sunscreen for the planet - Works in Progress Magazine
The world is warming faster than we can cut emissions. But volcanoes already been cool the planet accidentally. If nature can cool the Earth, maybe we can.
worksinprogress.co
September 18, 2025 at 5:06 PM
Beautifully illustrated and clear write-up on SRM by @danvisioni.bsky.social and Dakota Gruener.
worksinprogress.co/issue/sunscr...
worksinprogress.co/issue/sunscr...
Today we joined Natalie Mahowald, Lead Author of the IPCC 1.5SRE, to have a wide-ranging discussion on the topic of geoengineering, from the science to the governance challenges and ethical implications. Thanks to @cornelluniversity.bsky.social for organizing!
www.youtube.com/watch?v=o15F...
www.youtube.com/watch?v=o15F...
Geoengineering: The Science and Myths of Climate Intervention
YouTube video by eCornell
www.youtube.com
September 16, 2025 at 7:01 PM
Today we joined Natalie Mahowald, Lead Author of the IPCC 1.5SRE, to have a wide-ranging discussion on the topic of geoengineering, from the science to the governance challenges and ethical implications. Thanks to @cornelluniversity.bsky.social for organizing!
www.youtube.com/watch?v=o15F...
www.youtube.com/watch?v=o15F...
Who would have guessed that putting together your own group of people to write an "assessment" with the specific goal from the beginning to come out with a specific set of conclusions, cherry-picking data, highlighting uncertainties to imply there is no understanding, ...
September 11, 2025 at 3:49 PM
Who would have guessed that putting together your own group of people to write an "assessment" with the specific goal from the beginning to come out with a specific set of conclusions, cherry-picking data, highlighting uncertainties to imply there is no understanding, ...