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Daniel Cohan

@dscohan.bsky.social
1.9K followers 1.4K following 52 posts

Professor of environmental engineering at Rice University; author of Confronting Climate Gridlock; cohan.rice.edu

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Daniel Cohan @dscohan.bsky.social · 18/12/2025
This site provides a link to contact your congressperson and senators about the importance of saving NCAR, the world’s preeminent center for atmospheric research agu.quorum.us/home/
agu.quorum.us
AGU Science Policy Action Center
See what policy issues the AGU community is talking about
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Daniel Cohan @dscohan.bsky.social · 05/08/2025
To see just how fast emerging car markets can pivot to electric vehicles, check out Vietnam's jump from zero to 54% in this report by CSIS's Ilaria Mazzocco www.csis.org/analysis/ele...
EV sales share by country
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Daniel Cohan @dscohan.bsky.social · 09/07/2025
New paper with Chen Chen and Carrie Hashimoto examines how investments in power plants, transmission, storage, or efficiency would improve resource adequacy and reduce emissions in ERCOT www.sciencedirect.com/science/arti...
sciencedirect.com
Impacts of potential investments on electricity resource adequacy and emissions in Texas
Growing demand, an increasingly variable power supply, and blackouts during a 2021 winter storm prompted the Texas legislature to incentivize the cons…
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Daniel Cohan @dscohan.bsky.social · 09/07/2025
It wasn’t until researching this article that I realized quite how bad the Big Beautiful Bill is for clean energy — reduced royalty rates for fossil fuels, a gutting of fuel economy standards, and subsidies for biofuels & coal, along with the IRA cuts we all knew theconversation.com/big-beautifu...
theconversation.com
‘Big Beautiful Bill’ will have Americans paying higher prices for dirtier energy
The new federal law favors energy technologies that are already profitable and increase global warming over cleaner approaches that could use the investment support.
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Daniel Cohan @dscohan.bsky.social · 29/06/2025
Perhaps the worst energy provision I’ve ever seen in a federal bill G.O.P. Bill Adds Surprise Tax That Could Cripple Wind and Solar Power www.nytimes.com/2025/06/29/c...
nytimes.com
G.O.P. Bill Adds Surprise Tax That Could Cripple Wind and Solar Power
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Stand Up for Science! @standupforscience.net · 20/06/2025
If your “energy bill” helps billionaires get richer while we get dirtier air and higher prices… It’s not giving “big” or “beautiful.” It’s giving bought & paid for. zurl.co/9kkoD @dscohan.bsky.social #StandUpForScience #OBBB #ClimateCrisis
zurl.co
How the ‘Big Beautiful Bill’ positions US energy to be more costly for consumers and the climate
Some technologies could rapidly cut emissions, while others do little to fight climate change. The House bill favors the latter while nixing support for the former.
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Daniel Cohan @dscohan.bsky.social · 10/06/2025
My take on what the House-passed ‘Big Beautiful Bill’ would mean for energy and climate theconversation.com/how-the-big-...
theconversation.com
How the ‘Big Beautiful Bill’ positions US energy to be more costly for consumers and the climate
Some technologies could rapidly cut emissions, while others do little to fight climate change. The House bill favors the latter while nixing support for the former.
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Daniel Cohan @dscohan.bsky.social · 09/05/2025
Video from last month's True Climate Solutions panel www.progressiveforumhouston.org/speaker/true...
progressiveforumhouston.org
The Progressive Forum
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Daniel Cohan @dscohan.bsky.social · 22/04/2025
I started my career with an EPA STAR grant, which supported my first PhD student. It’s hard to see how early career environmental scientists, engineers and health scholars will get their start with EPA’s main program for external grants being dismantled. www.nytimes.com/2025/04/21/c...
nytimes.com
E.P.A. Set to Cancel Grants Aimed at Protecting Children From Toxic Chemicals (Gift Article)
The cancellations, set to apply to pending and active grants, also affect research into “forever chemicals” contaminating the food supply.
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Daniel Cohan @dscohan.bsky.social · 22/04/2025
Wow on.ft.com/4inhS2X China’s CATL says it has overtaken BYD on 5-minute EV charging time
on.ft.com
China’s CATL says it has overtaken BYD on 5-minute EV charging time
New version of flagship battery cell can achieve 520km range compared with BYD’s 470km, claims company
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cliffduke.bsky.social @cliffduke.bsky.social · 18/03/2025
This is a profoundly important attack on American leadership in environmental science. #fightfightfight
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Daniel Cohan @dscohan.bsky.social · 18/03/2025
The air quality and health models I have used throughout my career have emerged from EPA’s Office of Research and Development. Shuttering it would be a devastating loss. www.nytimes.com/2025/03/17/c...
nytimes.com
Trump Administration Aims to Eliminate E.P.A.’s Scientific Research Arm (Gift Article)
More than 1,000 chemists, biologists and other scientists could be laid off under a plan to dismantle the Office of Research and Development.
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David Ho @davidho.bsky.social · 01/03/2025
All websites that depend on NOAA data should display something like this. earth.nullschool.net
Weather and climate data shown on this website and countless others are at risk.

The National Oceanic and Atmospheric Administration (NOAA) is the U.S. agency responsible for global weather forecasting, hurricane prediction, ocean observation, and many other services vital to public safety. Its satellites, supercomputers, and research teams provide essential data that help us understand our planet and protect lives.

On February 27, the new U.S. administration initiated mass firings at NOAA. These actions are unethical and deeply disruptive to the talented scientists and engineers who dedicate themselves to the public good. The firings, along with expected budget cuts, have serious implications for the availability and quality of weather forecasts produced by the United States. They must be reversed immediately.

Much of the data on this website is downloaded directly from NOAA's servers. In this environment of uncertainty, access could be disrupted at any time. While I'll strive to keep all features on this website functional and switch to alternative data sources if necessary, some datasets have no substitute if they go offline.

If this concerns you, speak up. Share on social media. And if you're in the U.S., contact your representatives.

- Cameron
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Physicians for a Healthy Democracy @physiciandemocracy.medsky.social · 15/02/2025
Stand up for Science March 7, 2025 #ScienceSky #MedSky #SciSky @altnps.bsky.social @altcdc.bsky.social @altnih4science.bsky.social
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Andy Revkin 🌎 ✍🏼 🪕 ☮️ revkin.substack.com @revkin.bsky.social · 15/02/2025
Please pass to Energy Dept. employees (or others at agencies doing work that Trump and Musk seem eager to scrutinize). I heard through a solid source that employees were asked one day last week to take a break for a few hours at one of the Bureau of Ocean Energy Management offices. 🧵
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Daniel Cohan @dscohan.bsky.social · 12/02/2025
A 50% discount for the audio version of my book, Confronting Climate Gridlock, available through March 7th www.audiobooks.com/promotions/p...
audiobooks.com
50% OFF Confronting Climate Gridlock: How Diplomacy, Technology, and Policy Can Unlock a Clean Energy Future
An atmospheric scientist explains why global climate change mitigation and energy decarbonization demand American diplomacy, technology, and policy Professor of environmental engineering Daniel Co...
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Nat Bullard @nathanielbullard.com · 30/01/2025
My annual decarbonization presentation is here. 200 slides, covering everything from water levels in Lake Gatún to sulfur dioxide emissions to ESG fund flows to Chinese auto exports to artificial intelligence. www.nathanielbullard.com/presentations
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Katie Mack @astrokatie.com · 28/01/2025
I think some people hear “grants” and think that without them, scientists and government workers just have less stuff to play with at work. But grants fund salaries for students, academics, researchers, and people who work in all areas of public service. “Pausing” grants means people don’t eat.
washingtonpost.com
White House pauses all federal grants, sparking confusion
The Trump administration has put a hold on all federal financial grants and loans, affecting tens of billions of dollars in payments.
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Josh Lappen @jlappen1.bsky.social · 22/01/2025
New by me in @heatmap.news: The LA fires have accelerated the looming financial crisis facing gas utilities from 2035/2040 to today. Preventing that disastrous cost spiral, though, can help make burned areas safer, easier to rebuild, and more insurable! (1/12) 💡🔌 heatmap.news/ideas/la-fir...
heatmap.news
The Los Angeles Fires Accelerated the Looming Natural Gas Crisis
All American cities are at risk.
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Katie Mack @astrokatie.com · 22/01/2025
Devastating for scientists and their research, and everyone who benefits from that research. I’m not sure if everyone outside academia is aware that a delay or “pause” in grant funding often means the researchers themselves are lost from the field, along with their expertise.
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Amy Westervelt @amywestervelt.bsky.social · 21/01/2025
For folks who are new to BlueSky, I created a climate journalists starter pack (it’s full already but if there are enough folks to warrant a second one I can make it…or YOU can, anyone can!) go.bsky.app/1ivUnG
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Daniel Cohan @dscohan.bsky.social · 15/01/2025
Electric vehicles, circa 1980
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Emily Grubert @gruberte.bsky.social · 14/01/2025
🚨job alert🚨 Would you, or someone you know, like to channel something into thinking rigorously about how safe and electrified housing for everyone might also save the grid? I'm hiring a postdoc! 1-2 years, remote ok, $75k/year. Focus: model scenarios on deep building efficiency & grid impacts
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Grid Status @gridstatus.io · 23/12/2024
Batteries are reshaping ERCOT’s ancillary services procurement Battery generation capacity has made up 50%+ of awards for reg up and responsive reserves since 2022. In these, coal and gas regularly account for <20% of capacity. #energysky 🔌💡
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Costa Samaras @costasamaras.com · 25/12/2024
“The second is that Solyndra had real technology risk, & we don’t take real technology risk anymore at the Loan Programs Office.” - @jigarshahdc.bsky.social in this important interview with @robinsonmeyer.bsky.social. Agreed, & we have a “missing middle” in energy. www.nytimes.com/2024/12/20/o...
nytimes.com
Opinion | Yes, Biden’s Green Future Can Still Happen Under Trump
Jigar Shah and Robinson Meyer discuss how the decarbonization rollout can continue during the second Trump administration.
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Joseph D. Ortiz @earthsciinfo.bsky.social · 22/12/2024
France has added a 1.6 GW reactor to its grid after 17 yrs building. It will be taken off line shortly for repairs as discussed in the thread. In that time, the US added 191.8 GW of solar. After accounting for capacity factor (~25%) that's still 30x the capacity added. 🧪🔌💡☀️💨🔋
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holly jean buck @hollyjeanbuck.bsky.social · 22/12/2024
If you were to write a piece on carbon removal at the end of 2024, would it be about billionaires investing in a "gold rush"? Or about flight from a sector that has no clear and durable business model, in the face of decreasing climatetech funding and net-zero talk? www.nytimes.com/2024/12/22/c...
nytimes.com
Removing Carbon From the Sky Could Be the Next Climate Gold Rush
Investors are betting that they can make a dent in global warming, and healthy profits, with companies that alter the atmosphere.
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Nathaniel William Horadam @horadam.bsky.social · 03/12/2024
With the latest Chinese export controls on gallium, germanium, & antimony, you’re gonna hear more about the need to cut red tape (i.e., environmental regs) to help 🇺🇸 extract and secure these critical minerals. It’s a facile narrative rooted in political convenience & not commercial reality. 🧵(1/x)
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Daniel Cohan @dscohan.bsky.social · 13/12/2024
TCEQ proposes that just 4 of its 12 counties with high particulate matter levels should be classified as nonattainment for EPA's new PM2.5 standard houstonlanding.org/12-texas-cou...
houstonlanding.org
12 Texas counties failed federal air quality standards. Only 4, including Harris, will be reported to EPA
The TCEQ is recommending counties that failed national air quality standards be given a passing grade, concerning officials, residents and activists.
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Nat Bullard @nathanielbullard.com · 11/12/2024
Already compiled @colinmckerracher.bsky.social charts on the latest battery price index into a slide. Bravo to Colin and team www.bloomberg.com/news/newslet...
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Nat Bullard @nathanielbullard.com · 11/12/2024
The annual BloombergNEF battery survey is out. Quick hits: pack prices now $115 per kWh (and below $100 for cars in China) Almost 2/3 of China's EV models are priced lower than their internal combustion equivalents Great work @colinmckerracher.bsky.social www.bloomberg.com/news/newslet...
bloomberg.com
China’s Electric-Car Push Drives Global Battery Price Declines
Thanks for reading Hyperdrive, Bloomberg’s newsletter on the future of the auto world.
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Simon Mahan @simonmahan.bsky.social · 07/12/2024
I'm trying out my own starter pack, and naturally, it's an ode to #energytwitter expats. Bluesky limits additions to 150, so my apologies for missing like 10x of our friends. go.bsky.app/P6pgVxa
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molly taft @mollytaft.com · 05/12/2024
in August, i went to two meetings in Iowa—one headed by the Sierra Club, one emceed by disgraced congressman Steve King—both in opposition to the same project: a proposed carbon-capture pipeline. for Drilled, my longread on the pipeline & what it says about the future of climate politics:
drilled.media
Unrest in Carbon Country
How agricultural interests are teaming up with big oil to take advantage of tax credits meant to fight climate change—and what the backlash can tell us about the future of climate politics.
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Bob Kopp @bobkopp.net · 03/12/2024
In a new interdisciplinary Nature Climate Change Perspective paper, led by me, @lisgilmore and Rachael Shwom, we offer a critical perspective on #climate and social “tipping points.” 🎁: rdcu.be/d2gBC 🧵
rdcu.be
‘Tipping points’ confuse and can distract from urgent climate action
Nature Climate Change - The tipping points framing is widely used in climate discussions but receives mixed feedback. This Perspective critiques it for oversimplifying the complexities of natural...
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Jesse D. Jenkins @jessedjenkins.com · 27/11/2024
Massachusetts passed a big clean energy law on Nov 14th. Lots of great stuff! @canarymedia.com has details www.canarymedia.com/articles/pol... A quick summary of highlights... 🧵 🔌💡
canarymedia.com
Massachusetts passes bill to speed clean energy and slow gas expansion
The long-awaited legislation comes as advocates say more state-level climate policy is needed. Governor Maura Healey is expected to sign it into law.
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Prof Ray Wills @profraywills.futuresmart.com.au · 16/11/2024
Renewables means less shipping - a ship full of solar panels displaces 100 future coal shipments - a ship of solar panels displaces 50 LNG shipments @iea.bsky.social report shows future tech has already reduced global shipping needs 10% in a decade reneweconomy.com.au/one-shipment...
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Dr. Jonathan Foley @globalecoguy.bsky.social · 26/11/2024
If you think Direct Air Capture (DAC) is going to save us, please read this. This is isn’t some left-wing fringe environmental group saying this. It’s MIT. news.mit.edu/2024/reality...
news.mit.edu
Reality check on technologies to remove carbon dioxide from the air
An MIT Energy Initiative study finds many climate-stabilization plans are based on questionable assumptions about the future cost and deployment of “direct air capture” and therefore may not bring abo...
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Katharine Hayhoe @katharinehayhoe.com · 26/11/2024
Big news! The 'all scientists who do climate' feed now stands at: 🌏 3500 MEMBERS 🌎 ...more than it ever had on Twitter! Huge welcome to #3949, my fav colleague @brasmus.bsky.social, and #3500, @johndparker.bsky.social, who says he’s “not good at social media.” No longer, John! Pin it here ⬇️
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Timmons Roberts @timmonsroberts.bsky.social · 26/11/2024
🚨New study alert! Can #greensky define ‘information subsidy’? Would you recognize ‘solutions denial’? Here’s a thread on the networks opposing offshore wind in the Northeast USA, tracing how many of the discourses used against wind come from fossil fuels.. www.sciencedirect.com/science/arti...
Screenshot of abstract from https://www.sciencedirect.com/science/article/abs/pii/S2214629624004201?via%3Dihub
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Matthew Moyle-Croft @moylecroft.bsky.social · 19/11/2024
China's internal markets are super competitive - driving out margin. Under USD$100/kWh for BESS. #EnergySky www.linkedin.com/posts/iola-h...
linkedin.com
Iola Hughes on LinkedIn: 💲 BESS system prices have fallen below $100/kWh for the first time in… | 19 comments
💲 BESS system prices have fallen below $100/kWh for the first time in China on the back of record low LFP cell price. Despite this, system prices outside of… | 19 comments on LinkedIn
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Jonas Nahm @jonasnahm.com · 26/11/2024
Let's break down what 25% tariffs between the US, Canada & Mexico could mean, based on our deeply integrated supply chains and economies. 1/
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Ketan Joshi @ketanjoshi.co · 26/11/2024
Okay, I have to do a thread on this pretty amazing article because it is just seriously chockers with eye-opening stats about 'direct air capture' - ie, sucking up air and trying to remove carbon dioxide from it news.mit.edu/2024/reality...
news.mit.edu
Reality check on technologies to remove carbon dioxide from the air
An MIT Energy Initiative study finds many climate-stabilization plans are based on questionable assumptions about the future cost and deployment of “direct air capture” and therefore may not bring abo...
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Daniel Cohan @dscohan.bsky.social · 24/11/2024
What’s to be done when one country’s companies are better and cheaper at making technologies that the world needs to deploy more of and faster?
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Daniel Cohan @dscohan.bsky.social · 24/11/2024
Excellent discussion of the cost challenges for green ammonia and e-methane, and why the cost of green hydrogen is pivotal to each. www.latitudemedia.com/news/catalys...
latitudemedia.com
TEA breakdown: green ammonia and synthetic methane | Latitude Media
Shayle and his colleagues explore the challenging economics of two technologies — and what would have to change to make them work.
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Nat Bullard @nathanielbullard.com · 24/11/2024
Every year I do a big presentation on decarbonization. Here's another preview: Texas installed solar capacity will probably surpass installed wind capacity in 2025.
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Nat Bullard @nathanielbullard.com · 24/11/2024
Every year I do a big presentation on decarbonization. Here's a preview: India now consumes more coal, on an energy basis, than Europe and North America combined.
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Kelly Hereid @kellyhereid.bsky.social · 23/11/2024
Have a few fresh adds to my climate starter pack as people migrate over or revive dormant accounts: go.bsky.app/NYzg9uw
Climate folks you aren't following yet - but probably should
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Jaap Burger @jaapburger.eu · 23/11/2024
Summarising expert views on the China-made EV tariffs and discussing four scenarios. Policy considerations: Promote, Protect, Partner.
EPRS | European Parliamentary Research Service
Scenarios for 2030
Overview
Four scenarios for 2030 were developed based on the survey input from 10 policy experts on the European electric vehicle industry. The survey was conducted in June and July 2024 and the policy experts surveyed were selected from among the stakeholders and experts that authored the works summarised above. The 'cutting-edge Europe', 'overdependence' and 'slow electrification' scenarios were formulated based on their hopes, fears and expectations for the industry by 2030. A final
'sanctions spiral' scenario was based on potential wildcard events suggested by the policy experts.
Here, most policy experts underscored elements of a scenario in which Chinese hostilities against Taiwanled to a severing of EV supply chains with China. Figure 2 provides an overview of the four scenarios.
Figure 2 - European EV scenarios for 2030
High
Cutting-edge Europe
The EU and its EV manufacturers develop cutting-edge technologies and take a leading role in the global EV market
European EV manufacturing capacity
...
Slow electrification
Chinese carmakers have captured large shares of the European EV market through exports and local production as Europe lags behind
Low
Overdependence
tenoige dsatmetinese
domestic European EV industry and brands vanish
Sanctions spiral
Chinese counter-sanctions following aggression against
Taiwan cause massive
disruption of EV supply chains
2024
Source: EPRS.The future of European electricvehicles
Table 1 - Summary of stakeholder and expert views
Assertion
Shared by expert institution
Tariffs are not enough to protect EU competitiveness in this field; investment and / or other measures are needed
ARC Group, T&E, ECFR, ICDS,
Rhodium Group, CHOICE,
Martens Centre, EUISS, CSIS,
ING THINK, Bertelsmann
Stiftung
The tariffs may serve to attract Chinese investment into the EU
MIT Technology Review, Atlantic Council, EUISS, ING THINK
Tariffs will help EU producers buy time in their shift towards
EVS
GIS, EUISS, ING THINK
The EU needs a stronger industrial policy to support European
EV production
Elcano Royal Institute, Bruegel,
T&E
The EU-China automotive trade flow risks being reversed
ABI Research, MERICS
China wants to avoid escalation of trade tensions with the EU
Rhodium Group, Bertelsmann
Stiftung
Chinese EVs pose serious cyber security risks
ECFR
The EU may target other Chinese green technologies following
EVS
Rhodium Group
Source: EPRS.
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Dr. Jonathan Foley @globalecoguy.bsky.social · 22/11/2024
This is a work in progress. But here are some of my favoite climate voices, all conveniently here on Bluesky! I'll be adding more soon. go.bsky.app/Q4Uo8vV
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