“In most parts of the world, wind and solar are the lowest cost new power sources. And that will drive more investment, no doubt, in more renewable deployment,” says Columbia Climate School Dean and sustainable energy technology expert Alexis Abramson.“ Via @wsj.com. https://on.wsj.com/42hndmW

🎓 Annika Bellot, soon-to-be MA in Climate & Society grad and Class Day Student Speaker, focuses on international law and decarbonization efforts to help save small island states like Dominica, where she grew up. 💙 #Columbia2026 #ColumbiaClimate2026 ➡️ https://bit.ly/4d1BXLt

An assistant professor of Earth and environmental sciences and LDEO chemical oceanographer, Laramie Jensen studies metals in the ocean essential for the diet of phytoplankton, the algae that form the base of the ocean's food web. Learn more: https://bit.ly/48vxhwb

Now in its 5th year, Climate & Environmental Justice in NYC highlighted the critical climate-driven health and environmental impacts affecting our shared community, writes Columbia University chief climate/sustainability officer @dzarrilli.bsky.social via State of the Planet: https://bit.ly/423tBOH

Among the extraordinary women recognized in 2026 by the National Women’s Hall of Fame is groundbreaking geologist and cartographer Marie Tharp of Lamont-Doherty Earth Observatory! Learn more: https://www.womenofthehall.org/hall-of-fame-induction/2026-inductees/

🎓 Aynsley Kretschmar, a soon-to-be graduate of our MA in Climate & Society program and Academic Leadership Award recipient, reflects on the skills she has gained from her time at Columbia and what she’s most excited about for her future. 💙 #Columbia2026 #ColumbiaClimate2026 ➡️ https://bit.ly/48zxPkD

New piece in @theconversation.com by Ana Maria Camelo Vega on why clean #energy #finance isn't reaching projects in #Africa: outdated #sovereign ceiling methodology, #guarantees that don't cover the right risks, and #loan tenors too short for the assets they're financing. @climate.columbia.edu

👟 This #EarthMonth, a group of Columbia Climate School master's students and our dean Alexis Abramson laced up their sneakers, grabbed their Climate School hats, and ran the WE ACT Earth Day 5K Fun Run to support our wonderful community partner @weact4ej.bsky.social#EarthMonth

That's a wrap on Climate Risk. The class, that is. The risks, sadly, will only get worse in all of our lifetimes. 6 weeks, 4 guests, 23 teams of 3-5 students each, diving into various data sets going all out with the help of Claude Code et al. Syllabus, readings, etc: gwagner.com/cbs-climate-risk

Happy #EarthMonth! This #ColumbiaBeautifulPlanet 📷 features sunrise over Hayli Gubbi volcano, Ethiopia (Amdemichael Zafu Tadesse, LDEO). Share yours! For more #EarthDay photos and resources: earthday.columbia.edu

On Apr 29 6-8pm ET, join us for our special #EarthMonth Public Lecture—NASA's Billion $$$ Samples: Space Rocks, Open Science, and the Era of AI—with Lamont-Doherty Earth Observatory geochemist Kerstin Lehnert. 🌕 Learn More/RSVP: https://bit.ly/4mVTqJV

With her trusty secondhand Nikon from the '90s, MA in Climate & Society student Erin Frank takes photos around New York City, and finds that her camera and coursework have more in common than expected. Learn more: https://news.climate.columbia.edu/2026/04/27/seeing-climate-change-through-a-new-lens/

Join the Center for Earth Ethics Jun 12-13 at The Ashokan Center in New York's Hudson Valley for Spirit of Place, Spirit of Earth: An Eco-Justice Training. Learn more/apply by May 15 (Apr 30 priority deadline): https://centerforearthethics.org/spirit-of-place-spirit-of-earth/

Heading to @egu.eu? Come see @kschwarzwald.bsky.social show how "The choice of historical data product dominates climate uncertainty in projections of climate impacts in a 2-degree world" Quite the result, if I may say so myself, and the culmination of 2 years of work gwagner.com/observational

"Climate work is community work," said Waterfront Alliance's Memphis Washington at Community, Climate, and NYC’s Waterfront Future hosted by Climate School's Office of Inclusive Excellence to highlight how to get involved in climate resilience work. Via State of the Planet: https://bit.ly/4n4eNsD

On May 1 8:30am-12:30pm ET, join the Tamer Institute and Columbia Climate School for 2026 Climate Business & Investment Conference to explore how innovation in clean energy is redefining what’s possible and who’s poised to power next generation of growth. ➡️ RSVP by Apr 29: https://bit.ly/4co8TNX

Each year, we honor #EarthMonth by sharing photos that celebrate the beauty and magic of our planet as captured by the @columbiauniversity.bsky.social#EarthMonthcommunity. Enjoy our 2026 #ColumbiaBeautifulPlanet selections: https://bit.ly/41UhcML Visit earthday.columbia.edu for more ideas and inspiration.

Happy #EarthMonth! This #ColumbiaBeautifulPlanet 📷 features sunset over the Hudson River (Andrew Marshall Fagerheim, LDEO). Share yours! For more #EarthDay photos and resources: earthday.columbia.edu

Study by LDEO researchers/colleagues finds that Earth’s underlying crust in Turkana Rift region has been significantly thinned, presaging Africa’s eventual breakup—and with that finding, new perspective on how Turkana’s world-famous fossil record of human evolution came to be: https://bit.ly/41QD4ZC

Now that NYC's congestion pricing program has been in place for over a year, our experts weigh in on its success: LDEO's @dwesty.bsky.social on air quality, Columbia SPS' Steven Cohen on public policy, @sabincenter.bsky.social's @michaelgerrard.bsky.social on legal challenges. https://bit.ly/4vJe6Jj

Excited to share our new paper published today in @natcomms.nature.com! We find that the crust beneath the Turkana Rift is extremely thin, and that the rift’s maturation played a key role in shaping the accumulation of Turkana’s world-famous hominin fossil record. www.nature.com/articles/s41...

On May 4 5:30pm ET, join us for a screening of The Plastic Detox + conversation with experts Beizhan Yan (@lamont.columbia.edu), Jasmine McDonald (Columbia School of Public Health), Alexandra Zissu (@momscleanairforce.org), @sandragoldmark.bsky.social (Climate School). RSVP: https://bit.ly/4cHpjkY

In our new Science for the Planet video, Greeshma Gadikota of Columbia Climate School & @columbiaseas.bsky.social, director of Lenfest Center for Sustainable Energy, shares her work on new ways to recover valuable materials from industrial byproducts. Via State of the Planet: https://bit.ly/4cHwcTl

Short, thought-provoking, and action-oriented, Columbia’s Earth Institute Sustainability Primers deliver solutions-focused insights on today’s sustainability challenges. Browse books buff.ly/omAcITd @climate.columbia.edu @columbiauniversity.bsky.social #EarthDay #Sustainability #ClimateAction

Happy #EarthMonth! This #ColumbiaBeautifulPlanet 📷 features evidence of spring at LDEO Comer Building (Kelly Fenton-Samuels, LDEO). Share yours! For more #EarthDay photos and resources: earthday.columbia.edu

💡 K-12 educators, families, learners of all ages, looking for great #EarthMonth lessons? Check out our Climate LIVE K12 library (https://bit.ly/4dPS0hF), today featuring ❄️ Make ‘N Break Ice: https://bit.ly/3ODN1q6

New study by LDEO Tree Ring Lab scientists and colleagues finds that coastal forests in the Northeastern US contain a record of major hurricanes, trees are recovering from storms within two years, and coastal trees may already be showing signs of stress from sea-level rise: https://bit.ly/3OTvWbN

Daryush Nourbaha, MS in Sustainability Science alum, reflects on the heavy human, environmental, and personal toll as the effects of the war in Iran "accumulate quietly, embedding themselves in ecosystems and in human health." Via State of the Planet: https://bit.ly/4cvFQZ2

Happy #EarthMonth! This #ColumbiaBeautifulPlanet 📷 features Rock, ice, and sky in Greenland, "an ancient place holding the secrets of our planet, our memories" (Marco Tedesco, LDEO). Share yours! For more #EarthDay photos and resources: earthday.columbia.edu

💡 K-12 educators, families, learners of all ages, looking for great #EarthMonth lessons? Check out our Climate LIVE K12 library (https://bit.ly/4dPS0hF), today featuring 🐟 All About Fish: https://bit.ly/4sDU8Nh

💡 K-12 educators, families, learners of all ages, looking for great #EarthMonth lessons? Check out our Climate LIVE K12 library (https://bit.ly/4dPS0hF), today featuring 🪵 Put a Ring on It: https://bit.ly/4vtcWl7

Happy #EarthMonth! This #ColumbiaBeautifulPlanet 📷 features BLOOFINZ research cruise in Argo Abyssal Plain (Joaquim Goes, LDEO). Share yours! For more #EarthDay photos and resources: earthday.columbia.edu

🌟 Congratulations to LDEO geologist and Lamont Research Professor Michael Kaplan, awarded the Kayden Guggenheim Fellowship in Climate Studies by @guggfellows.bsky.social in recognition of career achievement and exceptional promise! #GuggFellows2026 ➡️ Learn more: https://bit.ly/4dOcZBr

Agreement bet Columbia & US Critical Materials will advance research in recovering defense-critical minerals from red mud, a major byproduct of aluminum refining. “Mud To Metal” will be led by expert Greeshma Gadikota of Columbia Climate School and @columbiaseas.bsky.social. ➡️ https://bit.ly/484HTBW

🔥 New online professional learning course! Circular Economy Strategies for Reclaiming Value with Columbia Climate School professor and associate dean Sandra Goldmark Understand circularity and the tools to apply it in real-world contexts. ➡️ Enroll today with Columbia+: https://bit.ly/4tRIDTl

What does climate action look like today? Our Earth Month reading list brings together 15 books on climate advocacy, science, conservation, and disaster preparedness. buff.ly/BaS0RDG #EarthMonth @columbiauniversity.bsky.social @climate.columbia.edu

Dinner and a movie: plancforcivilization.com Registration: columbiasocialenterprise.org/civicrm/even... @climate.columbia.edu & @columbiabusiness.bsky.social

In Capital Markets & Investments with professor Kevin Yuan, our MS in Climate Finance (https://bit.ly/3OFRetr) students learned from Columbia Business School Dean Emeritus Glenn Hubbard about macroeconomic challenges, what Federal Reserve must face in the future, and history & evolution of the Fed.

🧛 Are (energy) vampires haunting your house? Here, some of the biggest offenders that might be secretly costing you money and energy, and how to save on both. 🔌 Via State of the Planet: https://news.climate.columbia.edu/2026/04/13/the-energy-vampires-haunting-your-home/

Over spring break, students from our Office of Undergraduate Programs traded the classroom for the field, traveling to South Africa to tackle real-world conservation challenges in one of the planet’s most biodiverse regions. Via State of the Planet: https://bit.ly/3OJpXGq

This #EarthMonth, LDEO volcanologist Terry Plank shares the importance of studying volcanos like Chile’s Villarrica in our work to understand and protect our planet. 🌋 AVERT playlist: https://bit.ly/3OrDGSa 🌎 #EarthDay events, ideas, and resources: earthday.columbia.edu

This #EarthMonth, we're sharing photos from all over the world and from our campuses, too! Follow #ColumbiaBeautifulPlanet & share your own. 📷 Wildflowers on cliffs of Gaspé Peninsula, Canada (Miriam Cinquegrana, LDEO). More #EarthDay photos & resources: earthday.columbia.edu

This #EarthMonth, a quick but powerful reflection from LDEO volcanologist @einatlev.bsky.social#EarthMonthat Chile’s Villarrica Volcano on why it's so important to study and protect our planet. 🌋 AVERT playlist: https://bit.ly/3OrDGSa 🌎 #EarthDay events, ideas, and resources: earthday.columbia.edu

Happy #EarthMonth! This #ColumbiaBeautifulPlanet 📷 features Positano, Italy (Natalie Lewis, MA Climate & Society). Share yours! For more #EarthDay photos and resources: earthday.columbia.edu

This #EarthMonth, we're sharing photos from all over the world & from our campuses, too! Follow #ColumbiaBeautifulPlanet & share your own. 📷 Scene from FEFU & HER FRIENDS, @barnard-college.bsky.social greenhouse (Sandra Goldmark). More #EarthDay photos+inspiration: earthday.columbia.edu

Since 1970, #EarthDay reminds us to celebrate and protect our planet. This year's theme—“Our Power, Our Planet”—underscores how we can all be climate advocates, and denotes the many powerful, and renewable, tools we can use to meet our shared sustainability goals. 🌎 https://bit.ly/4vlwrMk

Protecting Our Planet: #EarthDay 2026 🌿 Hidden "Chemical Currency" in Carbon Cycle ❄️ Antarctica's 'Greenlandification' 🌍 Earth's "Missing" Billion Years Explained 🗓️ Apr 15 Pollution & Health 🗓️ Apr 29 NASA's Billion $$$ Samples 🌱 $10K Gift Match 📩 lamont.columbia.edu/news/newsletter

New study by LDEO researchers & colleagues finds that land subsidence is outpacing ocean-driven sea-level rise along the northern coastline of Java Island, Indonesia, underscoring the importance of tracking sinking land and rising sea in coastal regions: https://bit.ly/4suCADb

On Apr 27 11:30am ET, join us for Current Climate: Reporting on Climate Change on Network TV with @gingerzee.bsky.social, ABC News Chief Meteorologist/Chief Climate Correspondent! RSVP for this #EarthMonth Signature Speaker Series event (@columbiauniversity.bsky.social#EarthMonthForum): https://bit.ly/4mEfWHn

🔥 New online professional learning course! The Science of Climate Change: Beyond the Basics with Columbia Climate School professor Radley Horton Understand climate science, extreme risks, and impacts to make better decisions in a changing world. ➡️ Enroll today with Columbia+: https://bit.ly/47NJDzv