PVC, the third most mass-produced plastic in the world, is tough to recycle. But Tyeshia Sapp, 2025 #USCWrigley Graduate Fellow, is making it easier. Learn about how she's finding ways to make useful products from waste PVC: dornsife.usc.edu/wrigley/2025...

Just so you know: The average American’s federal income tax bill includes $36 to pay for SNAP benefits and $1,200 for corporate subsidies to businesses whose CEOs earn more in a month than a majority of tax payers will earn in a lifetime.

Allow me to introduce you to one of our amazing Wrigley Graduate Research Fellows, Bernie Tolentino. At @uscwrigley.usc.edu we’re doing bold and interdisciplinary #research that is leading the way to a more sustainable future. #Science means solutions. #PassItOn

Well done, Brown and MIT.

@uscwrigley.usc.edu and I are hosting the great Oliver Jeffers at the LA Central Library this Thursday at 5:00pm. Please come and be my guest. Tickets available here and use the code DELTAVIP2025 to get them for free:

I fully support the rights of Mr. Benioff, a USC Trustee, to say this, just as I support the rights of a USC faculty member to say “Free Palestine”. Among several reasons, this is why I personally would not sign on to the “Compact for Academic Excellence in Higher Education”.

Hey, I have an idea. How about a compact to fix the broken federal government?

Maybe for their next trick, #NYT will account for the human and environmental health externalities of petrol (and even hybrid) powered autos. I drive an #EV for a lot of reasons. Cost of charging isn’t one of them.

This isn’t only at happening at Harvard.

Three Mile Island wasn’t the worst nuclear disaster in American history. Read about what was and the research @joearvai.org, @aitormarcos.bsky.social, and I are doing to understand risky decision-making in this ✨unusual✨context. dornsife.usc.edu/wrigley/2025...

This is a false. The Nebraska “bankruptcy” has been thoroughly debunked. www.snopes.com/fact-check/n...

🚨🚨🚨Attention @dornsife.usc.edu and @USC.edu students! Enrollment is open for the @uscwrigley.usc.edu Summer Residential College on the #Environment. Develop hands-on skills, expand your knowledge, and soak up the beauty of our campus in a MPA on Catalina Island. Classes fill up fast. Don’t wait!

The group that authored a controversial report sowing doubt in the severity of #climatechange has been disbanded. I’ve said and written many times before, what to do in response to climate change is very much an open question. But whether climate change is real and consequential is not.

Yes, a talented artist. Also a graceful, thoughtful, and civil activist. Class act all the way. We need more like him.

🚨🚨🚨Hey @dornsife.usc.edu @usc.edu @uscwrigley.usc.edu students, I'm once again offering my class, "It's not easy being green: Decision-making for #sustainable action", in spring 2026. The class splits its time between LA and #Switzerland. There are only 16 spots so sign-up soon if you're interested.

Another misleading title. An article by a well established climate, junk scientist can hardly provide clarity on the consequences of #climatechange. The established fact is climate change is caused by humans and has led to extraordinarily negative outcomes for communities and species.

"More than 1,000 current & former Health & Human Services employees called on Kennedy to resign in a letter to the secretary & members of Congress." #resist

At last, a bipartisan agreement: that #RFKJr is a #junkscience and #conspiracytheory peddling liar. Even those who voted to confirm him are raising the alarm.

"Trusting the experts is not a feature of #science." WTF are you talking about, man?

I'be been saying this since Day 1 of #ChatGPT. It's now Day 1,000. It's way past time for universities to go back to #bluebook assignments and exams. I simply do not care if students don't like it. My job is to get students to think for themselves. If that's a probkem, my classroom isn't for them.

mRNA vaccines got the world back on its feet during the #COVID19 pandemic. Were it not for their development, we’d still be alone and indoors, drinking too much cheap wine, and watching #TedLasso. The US government’s retreat on #science continues.

I love James Talarico!

James is Hope

More of this guy, please. (TX Rep. James Talarico)

Motherfucking #windfarms. With delicious windfarm chips and artificial reefs to make SpongeBob happy. Nice. youtu.be/TRzEzU7kwyQ?...

If what the timing suggests is true, this is another cowardly move by CBS. Edward R. Murrow and Mike Wallace are rolling in their graves.

Meanwhile in Los Angeles…

Thoughts and prayers just aren’t going to cut it anymore. If you’re in office and you really care, tell us instead about what you’ll do to ensure #climate resilience and action. This isn’t me capitalizing on a tragedy. It’s me worrying about the people who are next up on the firing line. #TexasFlood

Koonin, Spencer, and Christy are junk scientists. Their "research" is that special combination of hilarious for how absurd it is, and dangerous for how it'll undermine people's safety (see: recent lethal floods in Texas). And FWIW, Koonin's "best seller" is hot garbage.

Koonin, Spencer, and Christy are junk scientists. Their "research" is that special combination of hilarious for how absurd it is, and dangerous for how it'll undermine people's safety (see: recent lethal floods in Texas). And FWIW, Koonin's "best seller" is hot garbage.

Just learned my home in DTLA is in the curfew zone. At once bummed and proud about this. Bummed for the local shops and businesses whose employees won’t earn a full day’s pay. Proud of my city and neighborhood for standing up to bullies.

If you don’t like what you see, or if you have buyer’s remorse, stand up and be heard. Don’t leave it to L.A. to walk alone.

It was only a matter of time. And this is just the beginning with peak storm season approaching. My heart goes out to thise in harm’s way. www.nytimes.com/2025/05/16/w...

As a decision scientist, I teach my students about the pitfalls of cherry picking outliers and using them to make sweeping generalizations. I'll be using this editorial from Steven Davidoff Solomon from @ucberkeleylaw.bsky.social in my classes next year. www.wsj.com/opinion/you-...

Let’s go #Oilers!!! Never say die with this lineup! Incredible comeback! Again. 🙌

A quick heads up that my Bluesky domain has changed. I can now be found at bsky.app/profile/joea....

My terrific colleague, @alexsegrecohen.bsky.social, led a study where we looked at US counties with worst drinking water violations. We also asked about people's perceptions about risks associated with privatized #water systems. You can learn more about the research here: thehill.com/policy/energ...

Thank you, @harvard.edu, for saying and doing what many of us in the academy have been thinking and wishing.

Some #cleanenergy enthusiasm from the @uscwrigley.usc.edu #Climate Forward conference, courtesy of @zacnews.bsky.social. substack.com/inbox/post/1...

Introducing #FridayFacts from @uscwrigley.usc.edu. It’s your new favorite way to get smarter about #climate and #sustainability topics (with a side of myth-busting)! First up, let’s breaks down the direct air capture, #DAC, of #CO2: what it does and doesn’t do 🤔. youtube.com/watch?v=_NJR...

Thank you for being our guest!

🌏 Introducing #FridayFacts, your new favorite way to get smarter about climate and sustainability topics. First up, #USCWrigley Director Joe Árvai breaks down direct air capture (DAC). Watch the full video: youtu.be/_NJR-_-6nOc?... @decisionlab.bsky.social @dornsife.usc.edu

What a privilege it was to discuss the energy transition and a bipartisan strategy for making progress on #climatechange with someone I so admire: Jennifer Granholm. Thank you Secretary and Governor Granholm for spending a few hours with me at USC today.

Thank you @katharinehayhoe.com for including me in your starter pack of Canadian #climate scientists. Now, more than ever, it’s time for us Canucks to step up!

You must check out the work of @aitormarcos.bsky.social. He’d make for a great partner on your scientific journey.

Come join us tomorrow at the Trinity Centre in #Bristol for a workshop on Organising for #degrowth: How to improve wellbeing whilst reducing consumption and production With @j-ainsworth.bsky.social from Degrowth London and part of the Bristol Festival of Commoning @cabot-institute.bsky.social

@climeworks.bsky.social gets it.

The system needs adjusting, not cancelling. The performance benchmarks need to be tightened over time in accordance with advancements in emissions reductions technologies. Otherwise, too many cheap credits become available, which disincentives companies to innovate and reduce emissions. 4/5

Cutting industrial carbon pricing system would also eliminate the policy with the most potential to reduce emissions, according to available modeling (440megatonnes.ca/insight/indu...) AND expose Canada to trade challenges b/c of Europe's carbon border adjustment mechanism. 3/5