I will be presenting on the Weather & Climate Livestream tomorrow (Wednesday) at 7:40 am (EST). My talk is about Certainties & Uncertainties, like my substack, but there will be new content! (see figure for an example) (some new content has not even finished being generated yet!) wclivestream.com

My new post updates my previous analysis, and also includes a grad school anecdote. open.substack.com/pub/thesarap...

The Death Star under construction by the Empire

Some challenges I encountered while using Claude (and some solutions) open.substack.com/pub/thesarap...

My latest post has been weeks in the making, but is particularly timely because RCP8.5 has been in the news this week: open.substack.com/pub/thesarap...

I wrote some more about COVID, but also about the value of per-capita adjustments when making maps: open.substack.com/pub/thesarap...

I have written a thing about geoengineering: open.substack.com/pub/thesarap...

My second post on my Hill Visit, this one about specific bills supporting science in Congress. open.substack.com/pub/thesarap...

Today I learned that UK grid operators need to plan for everyone turning on their electric tea kettles during halftime of major soccer matches…

Yesterday I was introduced to www.britannica.com/games/loop - it now ranks up there with www.nytimes.com/games/connec... and www.theatlantic.com/games/bracke... as my favorite of the daily games.

From www.nytimes.com/2026/04/30/c...: ""These places should not be penalized “due to foreign sources of emissions,” Lee Zeldin, the E.P.A. administrator, said on X." By that logic, California builders shouldn't be penalized with stricter building standards because of living in an earthquake zone.

🌍 This #EarthDay, AGU scientists gathered on Capitol Hill to advocate for science workforce policies that drive progress. Their voices help shape stronger communities, innovation, and our planet’s future. Get involved: spklr.io/63324EKgSG#EarthDay @aguscipolicy.bsky.social

The President's FY27 budget proposes the lowest funding for NASA, NSF, NOAA, and USGS in decades. If you have a Republican representative, or one on the House or Senate Appropriations Committee, please contact them to ask them to support science funding. open.substack.com/pub/thesarap...

First they came for evolution Then they came for climate science Then they came for epidemiology Then they came for, like, really really basic math

Thank you Kate for reminding us we can do good things. May they be the harbingers of more good yet to come.

I wish that HR 7865 (giving tariff revenue directly back to citizens, rather than the importing businesses) was getting more traction. www.congress.gov/bill/119th-c... (much better than S 3905 which refunds importers and suggests they should pass on refunds to customers... yeah, that'll happen).

Remember: before causing the price of oil to skyrocket, the Trump administration sabotaged the Post Office's electrification initiatives. Stupidity magnifying stupidity. www.markey.senate.gov/imo/media/do...

EDF has made the first formal, detailed objection to the EPA's Endangerment Finding repeal (that I am aware of) (as distinct from two lawsuits and counting, where briefs have yet not been submitted as far as I know): www.edf.org/media/health...

I have written about climate and agriculture in the context of developing damage functions open.substack.com/pub/thesarap...

My resignation letter

My latest post about the Chicago 1995 heatwave (timely with the ongoing southwest heatwave) and also the COVID pandemic. open.substack.com/pub/thesarap...

In this post, I address a subset of Environmental Justice issues and the recent Trump actions regarding them open.substack.com/pub/thesarap...

Today I learned that women often couldn't own businesses by themselves until 1988 (www.forbes.com/sites/debora...). I already knew that they couldn't have a credit card without a male co-signer until 1974.

Interested in how peer review works? I reviewed a GMD paper on RCMIP3 (egusphere.copernicus.org/preprints/20...). Open discussion journals let you see "under the hood." A very good paper means modest comments, but this can still show some of the value of peer review. Also, yay model intercomparison!

Listening to Sean Donahue present on the EF on an ABA webinar… realizing that he is not the Sean Donahue who is EPA general counsel… reading the wiki on the latter… seeing damning analysis of his qualifications during confirmation… does this help explain the low quality of EPA legal actions?

Andy Dessler points out that reliance on fossil fuels is bad, not only for climate and for air pollution and mining waste, but also for energy security and military spending. open.substack.com/pub/theclima...

Apologies for the Facebook link, but this is a cute video about anthropomorphized agencies talking about the Endangerment Finding www.facebook.com/share/r/1AXj...

Another lawsuit victory. Though it is sad that it is necessary to sue to government to get access to data that taxpayers have already paid for. www.govexec.com/management/2...

NYC congestion pricing wins in court - everything I've read about the program suggests that it is a huge success, so of course Trump hated it: www.nytimes.com/2026/03/03/n...

On The Climate Brink, an obituary for the DOE Climate Working Group report

Happy 1 month (plus a bit) birthday to my substack: open.substack.com/pub/thesarap...

2nd opinion, longer term: in the next administration, OPM should, as quickly as possible, make it as easy as possible for any former government employee who left service in the 5 years previous to rejoin government.

In my opinion, Congress should step in to deal with the problem of what to do about the tariff revenue, using it as a lump sum tax rebate for all Americans, and foreclosing any other lawsuits.

I made one more post on Endangerment to address the week's news and the de minimis argument in more depth. Starting next week, I hope to begin posting on non-Endangerment subjects! thesaraphreport.substack.com/p/through-th...

While I went with Alice in Wonderland, Joe Goffman went with Back to the Future: open.substack.com/pub/joegoffm...

In which I dismantle the EPA's Endangerment rollback with many references to Alice in Wonderland. open.substack.com/pub/thesarap...

I have thoughts about gerrymandering that will be the focus of a future substack post, but in the short run democrats need to gerrymander the heck out of everything so that republicans drop their opposition to national regulation.

Here's the final rule on endangerment (finally): www.epa.gov/regulations-...

YOU CAN PRINT THAT... honestly, too many outlets not being able to share this obvious and dangerous truth is a big part of how we've gotten to where we are.

On a sad day for climate a silver lining: I finally have a publication in Science or Nature (for those not in the know: Science & Nature are the two most prestigious journals for scientific publications. If not necessarily the best or the most accurate) www.science.org/doi/10.1126/...

If I hadn’t already cancelled my subscription for the Post, this would have cemented the deal. archive.ph/eoeiZ

The fourth and final “prequel” post in my Endangerment Series is up. With rumors flying that the final Endangerment rollback will be announced this week, this should be particularly timely. open.substack.com/pub/thesarap...

So the feds ARE NOT considering an mRNA vaccine for the flu, which could save countless lives, but ARE backing research into whether horse dewormer can cure cancer, because the right views vaccines as elite and ivermectin as populist. Cool. kffhealthnews.org/news/article...

I’m racing to finish writing my 4th substack post before the Trump EPA finalizes the Endangerment rollback… Trump Allies Near ‘Total Victory’ in Wiping Out U.S. Climate Regulation www.nytimes.com/2026/02/09/c...

The value of a statistical life (perhaps better characterized as the value of mortality risk reduction) can be an uncomfortable concept , but is vital for good government cost benefit analysis. But the Trump EPA is no longer valuing mortality. open.substack.com/pub/joegoffm...

In more optimistic news: predatory birds in downtown Dupont Circle and snow that stays white for weeks are urban sights that I would not have expected when I was young: I assume thanks in large part to cleaner cars and more ecologically friendly cities.

This Oren Cass article resonates with my instincts: The Finance Industry Is a Grift. Let’s Start Treating It That Way. www.nytimes.com/2026/02/06/o...

My former agency is not making tge news in a good way www.theguardian.com/us-news/2026...