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With construction of the new Tappan Zee bridge set to begin, Dorothy Peteet, a scientist at Lamont-Doherty, worries that restoration plans for the Piermont marshlands may be moving too quickly.

The last time the carbon dioxide level was this high was at least three million years ago, during an epoch called the Pliocene. “It feels like the inevitable march toward disaster,” said Maureen E. Raymo, a scientist at Lamont-Doherty.

The last time the planet was such a greenhouse, our ancestors were climbing down from the trees—and sea level was tens of feet higher. Lamont-Doherty scientist Maureen Raymo explains what the planet was like at this time.

Cites a 2012 study on past ocean acidification events led by Lamont-Doherty scientist Baerbel Hoenisch.

In an letter to the editor of the Times, Lamont-Doherty scientist Robert Newton argues for field research opportunities for high school students.

Lamont-Doherty scientist Wallace Broecker continues to study both climate change on a global scale and how increasing levels of carbon dioxide in the atmosphere are causing an increase in temperatures in both the Northern and Southern hemispheres.

The advice to build smarter, and higher, can be found in a 2011 report by ClimAID, a united effort from some 50 researchers at leading institutions such as Cornell, New York City and Columbia University’s Lamont-Doherty Earth Observatory campus in Palisades.

Peter Kelemen, a veteran earth scientist at Lamont-Doherty, pushes back against dystopian depictions of global warming and the human response.

Lamont deputy director Arthur Lerner-Lam discusses recent advances in the quest to predict earthquakes.

Lamont-Doherty scientist Maureen Raymo discusses her research on global sea levels during the Pliocene, about 3 million years ago.

Profile of Paul Olsen and his decades-long fascination with New Jersey geology.

A team of scientists that included Lamont-Doherty researchers Edward Cook, Jason Smerdon and Brendan Buckley found that the period 1971-2000 was the warmest three decade interval in at least 1,400 years.

Lamont-Doherty scientist Klaus Jacob discusses climate adaptation strategies for New York.

Discussion of a study by Lamont-Doherty scientists Sloan Coats and Jason Smerdon that found that climate change models are unable to reproduce megadroughts of the past.

Profile of Lamont polar scientist Robin Bell.

Simulations identify past megadroughts, but at wrong times. Lamont-Doherty scientists Sloan Coats and Jason Smerdon quoted.

The drought of 2012 was more about unusual weather patterns than global warming, says a study co-authored by Lamont-Doherty scientist Richard Seager.

Lamont-Doherty scientist Roger Anderson argues in favor of requiring utilities to put power lines underground.

The Great Plains summer drought of 2012 was more intense than the Dust Bowl era, and largely natural in origin, a report found. Report coauthor Richard Seager, a scientist at Lamont, comments.

Scientists are looking for shells on beaches along the East Coast, from near Washington, D.C. to Orlando, Fla. These are not ordinary shells on today's beaches, but the surf line of the Pliocene, about 3 million years ago. "I wish I could take people that question the significance of sea level rise out in the field with me," says Lamont-Doherty scientist Maureen E. Raymo.