Bill Lukens

@paleosol.bsky.social

geology | paleoclimatology | geochemistry | soils | sed/strat | Assoc. Prof. at JMU | views are my own Lab website: https://sites.google.com/view/lukenslabjmu Scholar profile: https://scholar.google.com/citations?user=Nlx0NacAAAAJ&hl=en&authuser=1&oi

Isotope geochemists: Everyone report your data as heavy over light, and your reward is you get to use this little guy ‰ Astrophysicists: Cool, let's do that but only for D/H. And it gets a %. Otherwise we'll do light over heavy thx. (lols aside, very cool work!) 🧪⚒️ www.nature.com/articles/s41...

Isotopic evidence for a cold and distant origin of 3I/ATLAS - Nature

Carbon isotopic measurements of the interstellar comet 3I/ATLAS reveal that it may have formed as long ago as 12 billion years and thus represents a preserved fragment of an ancient planetary system.

nature.com

Just bought a beach shade structure and can't stop thinking about these AI slop images in the online ads. Picture your family, happily sitting together, at noon, on the solstice, on the Tropic of Cancer, with the sun exactly overhead. But also the sun is not exactly overhead.

A cheaply generated, AI slop image of a beach with a family of four sitting beneath a square shade structure, with the shadow directly framing the footprint of the structure, but the sun rays poking into the frame of the slop image on the upper right.

Hey data scientists, can someone pls explain what in the world a 'standardized regression coefficient' is in a random forest? My understanding is that RF has nothing analogous to regression coefficients - what am I missing? 🧪📊 #Data See Fig 1 (rose diagrams) www.pnas.org/doi/10.1073/...

Human amplification of climate-induced greenhouse gas emissions from global small water bodies | PNAS

Human activities amplify climate-induced greenhouse gas emissions from small water bodies (SWBs), creating critical but unquantified feedback in th...

pnas.org

The diarrhea lettuce thing is bringing back memories of when I learned that Kenyans use the phrase "driving" as a euphemism for having diarrhea. A friend and I were hysterically laughing as I taught him the American diarrhea songs, but with 'driving' substituted. Good times.

Hey #EGU members, in case you missed it: The EGU Election Autumn 2026 for the next EGU Treasurer and the Union representative of the Early Career Scientists will take place from 2 to 24 November 2026. 😂 my inbox is overflowing this these emails… 🪨⚒️🧪 #AcademicSky

Pssst... You can hate corruption. And you can really really hate certain leaders. AND you can love the fact that we have the best USMNT in a generation. Lots of hate unfairly directed at Balogun and the team. Don't let fascists ruin your joy. ⚽ #WorldCup

In soccer, the ball must be completely over a line to be out of bounds. A huge improvement in the game would apply this same logic for offsides: A player is only offsides if they are completely beyond the plane, and if part of their body is still behind the plane then they're onside. ⚽ #WorldCup

The trans sports ruling reminds me of Sackett v. EPA (2023). Remember when the conservative justices decided that they knew how to define a wetland better than, you know, wetland scientists? They're doing the same thing re: biology. Crazy. 🧪⚒️

This is an incredible lightening bug year in the Shenandoah Valley. Our pollinator-friendly yard, freshly watered with recent rains, is teaming with their glowy little butts. 🤩

Um, WTF? "NSF will fund the X-Labs through a rarely used mechanism that .... allows NSF to fund nontraditional recipients such as a limited partnership or a venture capital firm, some of which might have been created solely to receive the NSF award." 🧪⚒️ #AcademicSky www.science.org/content/arti...

Exclusive: NSF slashes research programs to support new tech initiative, insiders say

Unexpected shift in funds has meant sharp drop in grants this fiscal year

science.org

Raising a toddler, in two acts: Act 1 (a beautiful, clear evening) - You show your son the moon for the first time ever. We all point to the sky in amazement! 🤩🌗 Act 2 (a beautiful, clear morning) - Toddler melts down, pointing at sky, because why no moon?? 😫 #dad #parenting #toddler

The World Cup and Olympics are neat because every country’s national anthem is an equally embarrassing, hokey ditty written so long ago that it bares no resemblance to any surviving culture. Is it legal to update these once a century? #WorldCup26

A deep-sea whale necropolis that has: 1) Far more whale falls than you can imagine, 2) At wild depths, & 2) Whale fossils as old as the Mio/Plio boundary, still on the seafloor?? 🤯 Gets my vote most interesting publication of 2026 (so far). #AcademicSky 🧪⚒️ www.nature.com/articles/s41...

A 5.3-million-year-old deep-sea whale necropolis in the Diamantina Zone - Nature

Researchers uncovered an enormous deep-sea accumulation of whale remains in the southeastern Indian Ocean, showing long-term, specialized ecosystems and an extensive fossil record that offers new insi...

nature.com

[me, for the first 17 mo of my son’s life]: there will be NO screen time! My son will never learn that the TV even turns on! [first day of #WorldCup26]: I’m so pumped to watch soccer with my son for the first time! 🫠