Lamont-Doherty Earth Observatory131
-
Ancient Pollen Points to Mega-Droughts in California Thousands of Years Ago
Ancient pollen spores that were in the air when mammoths roamed Southern California are providing new insights into historic droughts in the region, including how a series of mega droughts 25,500 to 27,500 years ago changed the ecological landscape.
-
Arctic Magic: One Research Vessel Multiplies to Hundreds
The Arctic is magical, that we know, but when one ship multiplies to hundreds of small boats we really see the effect that Arctic magic can bring.
-
Translating Nature’s Historians: The Tree Ring Lab Turns 40
In its first 40 years, the Lamont Tree Ring Lab tracked changing climates around the world, building an international reputation as a global leader in research, training and technology.
-
Tips for Being an Outstanding Mentor
What are the qualities that make someone an outstanding mentor? We asked two award-winning mentors and the students whose lives they have changed. This is what they said.
-
A Simple Question, Unexpected Applications – and an Award
Even the simplest research questions can lead to far-reaching public benefits. Consider Chris Small and Joel Cohen’s study of global population by altitude, being honored this week at the Library of Congress.
-
A Week of Firsts for This Arctic Nation
We are closing in on a week of intense focus and excitement for GEOTRACES and for the United States around the Arctic. President Obama became the first sitting president to visit Alaska, the US Coast Guard Cutter Healy with US GEOTRACES scientists completed the first unaccompanied US surface vessel transit to the North Pole, and…
-
The Southern Ocean Is Breathing in Carbon Dioxide at a Healthy Rate
“In the last 10 years, we were afraid that the Southern Ocean was going to quit giving us a break from climate change. This study shows that it’s recovered its ability to take up carbon dioxide, and that’s good news.”
-
From the Field: Mapping Lava Flows in Iceland
Lamont’s Einat Lev and Elise Rumpf write about their expedition to the lava fields of Iceland, where the two volcanologists and a drone named Buzz studied how lava flows and what happens to rivers, rocks and old lava in its path.
-
It’s as Clear as Mud
For the sampling GEOTRACES is doing in the Arctic there is a specific goal of collecting just the top few dozen centimeters of sediment and the water just above it. Although the plan was good, things don’t always go perfectly.
AGU25, the premier Earth and space science conference, takes place December 15-19, 2025 in New Orleans, Louisiana. This year’s theme—Where Science Connects Us—puts in focus how science depends on connection, from the lab to the field to the ballot box. Once again, Lamont-Doherty Earth Observatory and Columbia Climate School scientists, experts, students, and educators are playing an active role, sharing our research and helping shape the future of our planet. #AGU25 Learn More
