New paper! We revisit Fredskild’s Greenland pollen diagrams from the 70s & compare these to published pollen & other temp estimates to dig into shrub response to climate in the Arctic. A fun collaboration between Bryan & me, inspired by our distinct & initially contrasting perspectives on the topic

We have known for a long time that rapid CO2-induced global warming 56 million years ago caused extreme rainfall events and enhanced erosion of the landscape. Our new work shows that this drove increased burial of eroded soil and plant organic matter, which could have removed some of that CO2.

And so, this important study for #PaleoSky and ⚒️ people like me is part of the #TopViewedArticle group! Thank you again Cindy De Jonge and Francien Peterse for leading this #TeamBacteria #brGDGTs round-robin study! 🔗: doi.org/10.1029/2024... @icta-uab.bsky.social @climatecerege.bsky.social 🧪 👩‍🔬 (1/3)

Re-sharing now that it’s the current volume 🥳

A deep dive into a suite of water isotope proxies, many thanks to this great team: @yarrowaxford.bsky.social Bryan, Gabe, Wil & Jeemin

We're hiring! I'm recruiting a Postdoctoral Research Associate in climate & paleoclimate modeling of the tropical Americas. Come obsess over the tropical rain belt with me! :) Please share w/folks who may be interested. Ad here: wustl.wd1.myworkdayjobs.com/en-US/Extern...

Mia is a highly talented PhD student approaching graduation at a tough time for U.S. science. I have to highlight another neat thing she's been up to: Art/science/community collaborations in the very special south Greenland town of Narsaq: www.miattuccillo.com/community-ou...

New paper! PhD student Mia Tuccillo has uncovered another big impact of past warming in Greenland: lakes lost oxygen for thousands of years and cyanobacteria took over 🦠 🧪 🦠. It's kinda yikes... With collaborator @geobiomaggie.bsky.social (1/3)

The vast majority of permafrost exists in the subsurface. What happens when this deep, ancient permafrost thaws? How fast does it take microbial communities to "wake up"? This project now published in JGR, with @isotopes.bsky.social , @kopflab.bsky.social , et al., aims to address that question!

Excited to share our pre-print examining microbial activity and carbon utilization in the serpentinizing subsurface! Tl;dr: Serpentinite-hosted microbes are notably active, thriving on DIC despite alkalinity. Implications for #astrobiology, #carboncapture, and #GeoH2! www.biorxiv.org/content/10.1...

Ever wondered how long it takes microbial life in permafrost to ‘wake up’ after thawed? Hydrogen SIPing pro @tacaro.bsky.social ‘s newest preprint👇👇👇

for those who love both ggplot and dual-axis plots, rejoice! #rstats #dataviz #tidyverse

You know how annoying it is to make overlapping plots on the same x-axis but different y-axis in ggplot? Well…not anymore! 🎉🎉 @tacaro.bsky.social @rabergj.bsky.social ggstackplot.kopflab.org

Do you sample groundwater for subsurface geochemistry/microbiology? If so, check out the Open-source Well Geochemistry Logger (OpenWGL)! We developed a sensor array that can go down boreholes up to 1000m and is made out of commercially-available components (<~$1000)! github.com/tacaro/OpenWGL

Our group has lots on tap for #AGU24! Past big shifts in temperature, lake level, anoxia. Close looks at several water isotope methods. News from Greenland, New England, & the Midwest. A rundown:

Tues at #AGU24: my late-morning talk on several paleolim methods you might want to try (with fab collaborators including @petepuleo.bsky.social @isotopes.bsky.social @geobiomaggie.bsky.social) and (1/2)

NSF makes you say who you got conflicts (coauthored) with. We (really just Jordan Matelsky) just built you a tool for that. Literally one click: bib.experiments.kordinglab.com/nsf-coa

So many lakes! And soil water 👀

Lipid biomarker peeps: do you routinely hydrolyze your TLE? Why/why not? Looking through the lit and it’s all over the board.

New preprint on Icelandic water isotopes in lakes, streams, and soils. This was a really fun collaborative effort, and we welcome community feedback! @isotopes.bsky.social @yarrowaxford.bsky.social hess.copernicus.org/preprints/he...

New LCMS, who dis?

Just out, a 66 million year history of atmospheric CO2. Key take away: CO2 hasn't been at today's levels for at least 3 million years. These high CO2 worlds in the geological past had less ice and *much* higher sea levels 📈🌊 ⚒️🧪 www.science.org/doi/10.1126/...

Are you a doctoral student? Want to explore how Earth and life dance together? 🧪⚒️🌎🔬🧬💃 Join us next summer in Italy and at Penn State! Dates and info for the 2024 International Geobiology Course here: t.co/nv3Ooy88Vn

Want to Go Deep learning about microbes from all 3 domains of life in what will be 6.5 weeks of low-suck factor time? Consider applying to Microbial Diversity at the MBL for summer 2024.

Today in Nature Geoscience, a culmination of NINEish years of hard work by 40+ people, lead by the indefatigable @otherrock.bsky.social Iso2k is the source of & inspiration for some of my best science, and definitely the source of some of my favourite science people.

Earth Layers xkcd.com/2840

Just added 63 Greenland geology photos to geologypics.com --all (+5000 more) for free download to support your class. Type "Greenland" into the search and you'll now get 91 images, 8 of which are shown here. Or try a different place or Earth Sci feature (try "landslide") Please share.

Hello bluesky! Please help me to share my latest 🧪🍃🌎 with @geobiomaggie.bsky.social, @yarrowaxford.bsky.social, Stephanie Kusch and others www.science.org/doi/full/10....