Earth Sciences43
-
Days on Earth Are Getting Longer. You Can Thank the Moon, Not the Seasons.
For anyone who has ever wished there were more hours in the day, geoscientists have some good news: Days on Earth are getting longer. Very slowly.
-
Increasing Heat Is Driving Off Clouds That Dampen California Wildfires
Sunny California may be getting too sunny. Increasing summer temperatures brought on by a combination of intensifying urbanization and warming climate are driving off once-common morning cloud cover in southern coastal areas of the state, leading to increased risk of wildfires.
-
Machine Listening for Earthquakes
In a new study, researchers show that machine learning algorithms can pick out different types of earthquakes from three years of data at Geysers in California. The repeating patterns of earthquakes appear to match the seasonal rise and fall of water-injection flows into the hot rocks below.
-
How Australia Got Planted
A new study has uncovered when and why the native vegetation that today dominates much of Australia first expanded across the continent.
-
Photo Essay: How High Could Seas Rise?
Columbia scientists recently visited the Caribbean island of Barbados, whose fossilized coral reefs contain an exquisite record of how the ocean has risen and fallen in the past.
-
How High Can Seas Rise? On a Tropical Isle, the Answers Are Not Always Obvious.
To help predict the future of sea level rise, scientists are studying ancient corals on the island of Barbados.
-
In Ancient Rocks, Scientists See a Climate Cycle Working Across Deep Time
A gradual shift in Earth’s orbit that repeats every 405,000 years plays a role in natural climate swings.
-
Was the Earth Ever Frozen Solid?
Hundreds of millions of years ago, the planet was trapped in a global ice age. But exactly how icy things got is still up for debate.
-
Laia Andreu-Hayles Explores Tropical Forests in a Warming World
Research by tree-ring scientist Laia Andreu-Hayles will provide much-needed observational climate data for Bolivia and Peru and insight into the climate sensitivity of tropical tree species in the Andes.
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
