Dr. Jennifer Pett-Ridge
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jeffinerca.bsky.social
Dr. Jennifer Pett-Ridge
@jeffinerca.bsky.social

Mom, mentor, microbial ecologist. Soil biogeochemistry, climate change, CDR, roots-microbes-minerals, stable isotope probing metagenomics, NanoSIMS. Lead of LLNL Carbon Initiative, Roads2Removal.org, Microbes Persist SFA, & Terraforming Soil Earthshot Ctr. .. more

Jennifer Pett-Ridge is an American biologist who is a senior staff scientist at the Lawrence Livermore National Laboratory. She also serves as an adjunct professor at the University of California, Merced. Her research makes use of systems biology and geochemistry to uncover function in microbial communities. She was awarded a 2021 United States Department of Energy Ernest Orlando Lawrence Award. .. more

Environmental science 39%
Physics 21%
"For years, a cottage industry of political observers has contorted itself to obscure and occlude the obvious. That regardless of what others see in him, Trump’s entire political career...cannot be understood outside the context of his bitter, deep-seated racism." (gift link)
Opinion | This Is Just Who Trump Is
www.nytimes.com
We are recruiting a postdoc to study wetland plant-soil-microbe interactions using isotope labeling in our greenhouse at LLNL with me and Erin Nuccio as part of a multidisciplinary project. Experience with wetland plants and SIP a plus. Please share!
www.linkedin.com/posts/activi...
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Love it. My hometown.
Across America and the world, people are realizing it’s not possible to appease America’s dictator.

The only way to deal with him is to stand up to him — and the only way to stand up to him is by joining together against him.

It's time for a massive general strike across the country.
My sister-in-law's dad died last week, in hospice in the VA hospital in Minneapolis. I just learned Alex Pretti was part of his care team. They shot Alex less than 1/2 mile from my niece's house while doing the same observation work that my niece is doing. These are real people. Step up folks!
If you’re able, please support this verified GoFundMe for Alex Pretti’s family. And if you’re not in a position to donate, sharing it far and wide matters just as much. It’s at $300K and counting.
Donate to Alex Pretti is an American Hero, organized by Keith Edwards
On January 24, 2026, Alex Jeffrey Pretti, a Minneapolis resident and American citizen wa… Keith Edwards needs your support for Alex Pretti is an American Hero
www.gofundme.com
The United States has officially withdrawn from the World Health Organization.

This is a shameful move that puts both Americans and people all over the world at greater risk from disease outbreaks, which require international collaboration to contain.
Unions and community orgs are calling for a Minnesota-wide shutdown in 10 days to protest the ferocious assault by federal immigration agents. They're saying on Jan 23, no work, no school, no shopping. SEIU Local 26, UNITE HERE Local 17, & others are supporting, w/ more to join. By me, Amie Stager
“We Are Facing a Tsunami of Hate”: Amid ICE Crackdown, Unions and Community Groups Call for Minnesota Shutdown in 10 Days
Following the ICE murder of Renee Good and an assault on the state by federal immigration forces, a labor-community coalition is calling for residents to refuse to work, shop or go to school on Januar...
inthesetimes.com

Now published in Nature Biotechnology:
go.nature.com/44P7nSm
If you missed it, the TL;DR is in my April thread below
The Epstein Files Transparency Act is a law, passed by Congress on November 19 with an overwhelming vote. Complying with it was not optional. The Department of Justice did not comply.

I want to make sure this is very clear.
Humans have emitted 2750 gigatons of CO2 since the industrial revolution from burning fossil fuels and land use change. To put this in perspective, this is more than the (dry) mass of all living things on earth and everything humans have ever built combined:

Remarkable how well earthquake alert systems work. We got ~5-8 seconds warning ahead of a 6.5 quake just now. Center was 400 km away, but still felt pretty significant here in CDMX.

I bet it’s hard to let it go. I’m glad I got to see it at the beginning. Gold standard of a well built, well run study.

As someone who often conducts fieldwork in remote places, I find it really irritating that many basic applications now require an internet connection to function.

Reposted by Alberto Alemanno, Stephan Schulmeister, Ian Goodfellow , and 566 more

Reposted by Michael McFaul, Timothy Snyder, Mark Galeotti , and 554 more