Lamont-Doherty Earth Observatory

New research by @lamont.columbia.edu geochemists Nicolás Young, Joerg Schaefer, and colleagues shows that 2,000 years ago, remnants of the Laurentide Ice Sheet began growing again, marking the start of a new ice age, but by the 1960s, global warming had reversed that growth: https://bit.ly/48iEj6I

When Baffin Bay Ice Shelf disappeared, it destabilized surrounding ice sheets, contributing to sea level rise, finds a new study by LDEO scientists and colleagues. This work could lead to more accurate predictions of how Antarctic glaciers might retreat and raise sea levels: https://bit.ly/4yETmTj

🗓️Wed Oct 28 is #ColumbiaGivingDay! Your gift to @lamont.columbia.edu—a world leader in Earth, environmental, and climate science—will fund research for the future of our planet. Thanks to $50K match from an anonymous donor, your gift will have double the impact: https://bit.ly/4nUCFPb

🌿 Climate LIVE K12, our free online learning series, features our experts & students talking about biodiversity, climate finance, climate action in sports, plastic pollution, safe water, El Niño, and wildfire management. We welcome learners of all ages! Learn more: https://bit.ly/3ULJmcR

More than 2,500 visitors explored hands-on activities, lectures, and installations at @lamont.columbia.edu Open House 2026, our biggest, best science fun and discovery event of the year! Check out some of the day’s many highlights: https://bit.ly/3VRsj9H

Largest canyon system in solar system is still active and shaping Mars today, billions of years after it first formed, finds new research by @imperialcollegeldn.bsky.social and @columbiauniversity.bsky.social scientists, including LDEO structural geologist Folarin Kolawole: https://bit.ly/4zH6urK

📢 Zoom option for Oct 20 5pm ET AI Data Centers: Is Space the Next Frontier? with @neildegrassetyson.com, Alexis Abramson, @davidsandalow.bsky.social, and Nobuo Tanaka: columbiauniversity.zoom.us/s/99695871938#success

On Saturday, we had a blast chatting about SciOD at the Lamont-Doherty Earth Observatory Open House. Thanks to all who stopped by to explore the ocean drilling map, check out some core replicas, and add to our (spooky) seafloor drawing.

☄️Space rocks, 🌋 volcanoes, and 💨 dirt clouds, oh my! Run don't walk to Lamont Open House, our biggest, best science fun and discovery event, this SATURDAY OCTOBER 17 on our beautiful campus in Palisades, NY! RSVP: https://openhouse.ldeo.columbia.edu

We hope to see you on campus for Sat Oct 17 Lamont Open House, but if you can't make it, tune in for talks by our scientists and experts live from Monell auditorium! 🎥 Visit Open House Lectures and join via Zoom: https://openhouse.ldeo.columbia.edu/lectures

From the impact of suspending US embassy reporting on air quality to why two extreme heatwaves had different impacts to how to make vulnerable populations in smaller cities more visible, it's our monthly research roundup from State of the Planet: https://bit.ly/4B7Kdot

New study by @columbiauniversity.bsky.social and @ucberkeleyofficial.bsky.social researchers, including LDEO environmental geochemist Beizhan Yan, finds that when microplastics contact water, their surfaces can become chemically reactive. This could be how they get us sick. ➡️ https://bit.ly/47g66EH

🗺️ "The whole world was spread out before me. I had a blank canvas to fill with extraordinary possibilities." If you're inspired by pioneering @lamont.columbia.edu scientist #MarieTharp, Oct 17 Lamont Open House is for you! 👉 Learn more and RSVP today! #LamontRocks openhouse.ldeo.columbia.edu

🔥 New online professional learning course: Biodiversity & Sustainability with @climate.columbia.edu lecturer @jennalawrence.bsky.social! Learn how biodiversity shapes our health, economies, ecosystems, and why it matters for business & policy decisions. ➡️ Enroll via Columbia+: https://bit.ly/4s5yIdp

🌱 Oct 17 Lamont Open House (openhouse.ldeo.columbia.edu) science discovery do-ahead! Test your soil and paint for lead with @lamont.columbia.edu geochemist Lex van Geen. #LamontRocks Learn how to collect your samples: openhouse.ldeo.columbia.edu/lead-sampling-soil-and-paint

On Oct 14 4-4:30pm ET, join this virtual Climate LIVE K12 session to meet a high school student investigating innovative ways to understand, prevent, and mitigate algal blooms that disrupt ecosystems. Learn more/RSVP: https://bit.ly/3UrFE85

🥳 Sat Oct 17 10am-4pm: Join us at @lamont.columbia.edu Open House for family-friendly, hands-on science activities and talks by our experts! 🚌 Free shuttles! #LamontRocks Learn more/RSVP: openhouse.ldeo.columbia.edu

What is a super El Niño? @neildegrassetyson.com and @chucknicecomic.bsky.social sit down with @lamont.columbia.edu climate scientist @adamsobel.bsky.social on StarTalk to break down what to expect from this El Niño and what makes this one historically big: https://www.youtube.com/watch?v=mgPN8B-B7tg

🌡️ Is it hot in here?! Join us at Oct 17 @lamont.columbia.edu Open House, our biggest science fun and discovery event, to walk through Warming Stripes and see temperature trends from 1850 to the present. 🚌 Free shuttles! #LamontRocks 👉 RSVP: openhouse.ldeo.columbia.edu

New paper in ES&T Letters: the first full-year look at what NYC congestion pricing did to air quality. Led by the brilliant Polina Goldberg, we combined 15 roadside PM2.5 monitors with TROPOMI NO2 to ask if air in the Congestion Relief Zone got cleaner, and did pollution just move next door?

👏 @lamont.columbia.edu scientists have received major honors from @agu.org for their contributions to our understanding of ocean floor structure, deep Earth processes & sea-level change, dust & paleoclimate, ocean carbon cycle, and physics of Earth’s deep interior. #AGU26 ➡️ https://bit.ly/4yJQXaO

One year after the city launched congestion pricing, fine particulate pollution inside NYC’s congestion relief zone was 13% lower, finds a new study by @lamont.columbia.edu's Polina Goldberg, Abhishek Anand, @dwesty.bsky.social & @gwpublichealth.bsky.social's Daniel Goldberg: https://bit.ly/4i79dER

🎙️🍠 Brought to you by @jochebedlj.bsky.social and Dannie Dinh of our Food for Humanity Initiative, Food Pod for Humanity explores topics at food systems-climate change intersection with diverse experts. Season 3 launches soon, focused on how food gets to our plates! https://bit.ly/3TrvPXv

Study led by @oregonstate.edu's Sean Hixon & @climate.columbia.edu's Leanne Phelps of ancient cattle, sheep, goat bones on Madagascar suggests that spread of introduced livestock 1,200 yrs ago coincided with forest loss & population declines among large native herbivores: https://bit.ly/4yCK4ru

🥳 Join us on our beautiful campus in Palisades, NY for Oct 17 @lamont.columbia.edu Open House (openhouse.ldeo.columbia.edu), our biggest, best science fun & discovery event of the year! Shuttle from Columbia Morningside & Crestron in Rockleigh, NJ. #LamontRocks 👉Details: https://bit.ly/4yr5JCp

Researchers lay out the strengths and drawbacks of borehole distributed acoustic sensing for studying earthquakes in new #AGUPubs research from @lamont.columbia.edu, @berkeleylab.lbl.gov, @fervoenergy.bsky.social, & @bostonu.bsky.social. 🧪 eos.org/research-spo...

This summer, programs led by the Climate Education for a Resilient Future Earth Network at @climate.columbia.edu in collaboration with @lamont.columbia.edu immersed HS students in hands-on climate research, helping the next generation of scientists build key skills: https://bit.ly/47o5q05

🛁 Oobleck! How can a bathtub full of cornstarch and water help us understand the dynamics of the solid Earth? Join us at Oct 17 @lamont.columbia.edu Open House to find out this and more! 🚌 Free shuttles! #LamontRocks 👉 RSVP: openhouse.ldeo.columbia.edu

The current El Niño will break all sea-surface temperature records to date and will very likely deliver unprecedented weather-related impacts around the world. Learn more from our experts via State of the Planet: https://news.climate.columbia.edu/2026/10/01/el-nino-2026-how-big-could-it-get/

🌊 A Career Spent Collecting Earth's Seismic Clues 🔥 Unused Natural Gas Behind NYC’s $300M Waste of Potent Greenhouse Gas ⛵ Robot Sailboats to Spend 5 Years Measuring Carbon in Southern Ocean 🗓️ RSVP for Oct 17 LDEO Open House: openhouse.ldeo.columbia.edu ➡️ https://bit.ly/4AKwDar

💡 Oct 19 2-4pm ET: Join us for our Postdoctoral Research Symposium, featuring work by postdocs Rebecca Gustine, Linqiang He, Lovees Lueong, and Pavithra Selvakumar, moderated by program co-directors Suzana Camargo and Michael Puma: https://bit.ly/3VYBHbh

Read the #OpenAccess article by Ivanovich, et al. [2026] for free on @wiley-stem.bsky.social! 🔗 doi.org/10.1029/2026... @lamont.columbia.edu #Climate #HeatWave

🌋 Whether you're an aspiring scientist or long-time science enthusiast, @lamont.columbia.edu Open House is going to be a blast! Join us Sat Oct 17 for lab tours, hands-on activities, and talks by our world-renowned scientists. 🚌 Free shuttles! #LamontRocks 👉 RSVP: openhouse.ldeo.columbia.edu

As part of HISEAS (hiseas.org), @lamont.columbia.edu scientists are studying fossil coral reefs in the Cook Islands to reconstruct sea levels during the Last Interglacial and improve projections of future change: https://bit.ly/4deH4ZW

Is swimming in the Hudson River a good idea? City officials, swimmers, advocates, and experts including @lamont.columbia.edu biological oceanographer Andrew Juhl weigh in. Via @gothamist.com. https://gothamist.com/news/swimming-the-hudson-river-its-a-thing-but-avoid-the-dead-rats-other-water-hazards

🥳 Whether you're an aspiring scientist or long-time science enthusiast, @lamont.columbia.edu Open House is for you! Join us on campus Sat Oct 17 10am-4pm for lab tours, hands-on activities, talks by our world-renowned scientists. 🚌 Free shuttles! #LamontRocks 👉 RSVP: openhouse.ldeo.columbia.edu

🐬 Among our Oct 17 Lamont Open House (RSVP: openhouse.ldeo.columbia.edu) and Art Meets Science at Lamont exhibits is Whimsical Science...Tiny Creatures & Big Ideas by award-winning author/illustrator Betsy Franco-Feeney. Via Hudson Valley News: https://bit.ly/4AxfbGB

Seismologist Göran Ekström of Lamont-Doherty Earth Observatory tracks incidents like landslides and glacier collapse using tools once used only to monitor earthquakes. Learn more: https://lamont.columbia.edu/news/career-spent-collecting-earths-seismic-clues

The COCO2 project—co-led by Adrienne Sutton of NOAA PMEL & @oceancarbon.bsky.social of @lamont.columbia.edu/@columbiauniversity.bsky.social—will deploy a fleet of autonomous vehicles in the inhospitable Southern Ocean to reduce uncertainty in estimates of ocean carbon sink: https://bit.ly/4hovFrs

🌟 Congratulations to @lamont.columbia.edu marine geologist William B.F. Ryan, awarded the prestigious Maurice Ewing Medal from @agu.org in recognition of significant original contributions to the ocean sciences! ➡️ https://www.agu.org/user-profile?cstkey=73bf6785-45db-47c8-a720-d6690589fd8c

Join TODAY's #ClimateWeekNYC events via livestream: 12:45-1:45pm L.A. Times’ Boiling Point Live ▶️https://bit.ly/4rygEZ1 2-3:30pm Beyond the Forecast: What El Niño Reveals About Science, Society, Action ▶️https://bit.ly/4hIlQWO 5-6pm From Antalya to Addis Ababa: Making COP32 ▶️https://bit.ly/4h747YY

🌟 Congratulations to @lamont.columbia.edu oceanographer/carbon cycle scientist @oceancarbon.bsky.social, elected a Fellow of @agu.org for exemplary leadership and outstanding scientific achievements! ➡️ https://www.agu.org/user-profile?cstkey=79e0fdf5-d2e4-40d6-8702-a078313f5406

🌟 Congratulations to @lamont.columbia.edu climate scientist Gisela Winckler, also @climate.columbia.edu professor, elected a Fellow of @agu.org for exemplary leadership and outstanding scientific achievements! ➡️ https://www.agu.org/user-profile?cstkey=05b39d15-6321-4ebf-bafc-4f2813467ca4

🌟 Congratulations to @lamont.columbia.edu geodynamicist Jacqueline Austermann, awarded a prestigious James B. Macelwane Medal from @agu.org, which recognizes outstanding early career scientists for their significant contributions to Earth and space science! ➡️ https://bit.ly/4hLzPu3

Marine CO2 removal could support climate action but faces major scientific, technical, governance challenges, finds NASEM report, whose committee members include experts @romany-webb.bsky.social of @sabincenter.bsky.social & @oceancarbon.bsky.social of @lamont.columbia.edu. ➡️ https://bit.ly/3UXlK4X

Artist Selva Ozelli, whose exhibit Flags of Science CCL is on display as part of Art Meets Science at Lamont, has recently interviewed several of our amazing scientists, including Fola Kolawole, Sheean Haley, @roseatmos.bsky.social, Mike Steckler, Margie Turrin! Via TRVST: https://bit.ly/4hDkFrA

💡 Today I Discovered (TID): Chasing Mystery Algal Bloom in Mid-Atlantic Bight This year, an extraordinary phytoplankton bloom stretched across coastal waters from MA to NJ. What caught attention of The Goes-Gomes Lab was not just its size, but who was blooming. Learn more: https://bit.ly/4AobRNC

📣 Postdoc opportunity alert! Join our dynamic community of Earth, environmental, and climate scientists as LDEO postdoctoral fellow. Principal criteria: scientific excellence + clear plan to investigate problems at forefront of Earth science. ➡️ Apply by Nov 6: https://bit.ly/3WRD6xT

🥳 Whether you're an aspiring scientist or long-time science enthusiast, @lamont.columbia.edu Open House is for you! Join us on campus Sat Oct 17 10am-4pm for lab tours, hands-on activities, talks by our world-renowned scientists. 🚌 Free shuttles! #LamontRocks 👉 RSVP: openhouse.ldeo.columbia.edu

This #ClimateWeekNYC, as Climate Group's education partner, we're bringing bold ideas, leading experts, and groundbreaking research to shape the conversation on climate action. Explore some highlighted events and learn more via State of the Planet: https://bit.ly/4z39IFZ