A new study examines why, millions of years ago, grasses with a new way of doing photosynthesis displaced previously dominant plants, shrubs, and trees.
Funding from the Zegar Family Foundation will enable Williams to create a tool to help scientists better understand how wildfires in the Western United States may behave in the future.
Climate models predict that as a result of human-induced climate change, the surface of the Pacific Ocean should be warming. But one key part is not.
The three new Fellows, all scientists at Lamont-Doherty Earth Observatory, will pursue high-risk, high-reward research that furthers understanding of how climate change impacts human sustainability.
New research funded by the Center for Climate and Life could provide insight into the global decline of coral reefs in the 20th century.
The current megadrought in the American West may be one of the most severe in the past 1200 years, says new research by Park Williams, one of our Fellows.
The donation from Dirk Ziff (CC’88) and Daniel Ziff (CC’96) will support research on climate change impacts, ocean health, and adaptation.
An atmospheric scientist seeking to understand how the rapid decline of Arctic sea ice will impact North American weather extremes is the Center’s newest Fellow.
A combination of urbanization and a warming climate are causing cloud cover to plummet in southern coastal California, leading to increased risk of wildfires.
A new study has uncovered when and why the native vegetation that today dominates much of Australia first expanded across the continent.
Columbia University and data-analytics firm Jupiter will collaborate on improved hurricane track simulations so that the public and private sectors can plan for weather and climate risks.
Researchers report a sharp drop in salinity in the North Atlantic Ocean over the last decade, providing the most detailed look yet at changing ocean conditions in the region.
The death of coral reefs is a more significant factor in the erosion of tropical coastlines than rising sea levels, says research by Lamont’s Alessio Rovere and an international team of scientists.
Researchers create first model for hurricane hazard assessment that is both open source and capable of accounting for climate change. They hope the new system will lead to storm risk and hazard assessments for major cities.
In coming decades, the effects of high humidity in many areas may surpass humans’ ability to work or, in some cases, even survive.
A new study shows that even minor deterioration of ice shelves can instantaneously hasten the decline of ice hundreds of miles landward.
Researchers have devised a way to use satellite measurements to predict when and where ozone will form. This may help assess the most effective approaches to reduce emissions and improve air quality.
The warmer, more acidic waters caused by climate change influence the behavior of tiny marine organisms essential to ocean health.
Volcanic eruptions have been known to cool global climate, but they can also exacerbate the melting of ice sheets, says a new study.
Humans migrated out of Africa to escape a drying climate, about 60,000 years ago, according to a new study in the journal Geology.
Global warming-related rises in winter temperatures could significantly extend the range of one of the world’s most aggressive tree-killing insects.
A new study validates that the East Antarctic ice sheet should remain stable even if the western ice sheet melts.
Rising temperatures due to global warming will make it harder for many aircraft around the world to take off in coming decades, says a new study.
A new initiative accelerates Columbia’s commitment to advance knowledge and solve some of the greatest scientific challenges facing the world today.
Scientists have found evidence for a possible abrupt change in the Sahel, a region long characterized by aridity and political instability.
During the last glacial period, there were lakes under Antarctica’s ice sheet, which may have accelerated the retreat of glaciers in the past.
As the world warms due to climate change, shifts in global distribution of rainfall can be expected, impacting water resources across the planet.
The health and environmental benefits of U.S. clean air policies extend to global climate.
The widespread presence of seasonally flowing streams signals that the ice may be more vulnerable to melting than previously thought.
A report by Columbia University and Willis Re says that the average annual loss from severe convective storms was $11.23 billion for the period 2003-2015.
Changes in the annual summer monsoon that drops rain onto East Asia likely altered the course of early human cultures in China, say the authors of a new study.
Two scientists who untangled the forces that drive El Niño, the world’s most powerful weather cycle, won the 2017 Vetlesen Prize for achievement in Earth sciences.
Rainfall patterns in the Sahara during the six-thousand-year “Green Sahara” period have been revealed by analyzing marine sediments.
The Gordon and Betty Moore Foundation announced a $3.7 million grant to Lamont-Doherty Earth Observatory for research on changing patterns of sea ice in the Alaskan Arctic.
Evidence buried in Greenland’s bedrock shows that the Greenland Ice Sheet nearly disappeared for an extended time in the last million years or so.
23 million years ago, the Antarctic ice sheet was shrinking quickly. A new study by Lamont scientists sheds light on the cause of that ancient melt.
A new study says that human-induced climate change has doubled the area affected by forest fires in the U.S. West over the last 30 years.
As the Southwestern U.S. grows hotter, the risk of long-lasting megadroughts rises, passing 90% this century if greenhouse gas emissions continue at their current pace.
In a new study, Lamont’s Michael Previdi and Lorenzo Polvani found that the effect of rising temperatures on snowfall in Antarctica has so far been overshadowed by the frozen continent’s large natural climate variability.
Powerful tropical cyclones like the super typhoon that lashed Taiwan in July are expected to become even stronger as the planet warms.
A new study shows how Antarctic sea ice migration may be more important for the global ocean circulation than anyone realized.
A new study supplies the longest and most complete record of ancient plant life in much of what is now Ethiopia and Kenya, the assumed birthplace of humanity.
Scientists working at the power plant demonstrated how CO2 emissions pumped into the earth could be chemically changed to a solid within months.
Earth’s own large-scale iron fertilization experiments over 500,000 years show adding iron to the equatorial Pacific surface has little effect.
Maureen Raymo, a marine geologist and paleoceanographer whose name is connected with key theories about how ice ages wax and wane and how sea levels change, has been elected to the National Academy of Sciences.
The World Surf League is providing $1.5 million in first-year funding for ocean science at Lamont as part of an innovative new philanthropy called WSL PURE.
Mesoscale turbulence is where most of the kinetic energy in the oceans can be found, and it may play powerful roles in the global climate.
One scientist is focusing on food security and climate shocks. The other is exploring the influence of climate change on droughts and wildfires.
A new study uses sediment cores to track the expansion and retreat of glaciers through time and finds they are more sensitive than realized.
The Indonesian peat fires that have been choking cities across Southeast Asia are creating more than a local health menace—they’re releasing immense stores of CO2.
Scientists have identified 32 water basins where loss of snowpack as temperatures warm is putting the water supplies of large populations at risk.
Using tree rings, a new drought atlas maps the reach and severity of dry and wet periods across Europe and the Mediterranean over the past 2,000 years.
As global temperatures rise, knowing just how far Greenland’s ice sheet shrank in the past could help scientists predict sea level rise in the future.
A new study finds that the Horn of Africa is drying at a rate that is both unusual in the context of the past 2,000 years and in step with human-influenced warming.
Ancient pollen is providing new insights into historic droughts in Southern California, including how a series of mega-droughts that changed the ecological landscape.
Since the late 1980s, the Southern Ocean’s rate of CO2 uptake appeared to have stagnated, alarming scientists. New data shows a recovery.
To understand the impact on the Amazon as global warming produces more intense and frequent droughts, we need to understand its water and carbon cycles.
A new study finds that global warming has measurably worsened the ongoing California drought and holds warnings for the future.
A new study of tree rings from Mongolia dating back more than 1,000 years confirms that recent warming in central Asia has no parallel in any known record.
A team of oceanographers says much of the heat trapped in the atmosphere by greenhouse gases is being soaked up and stored by the oceans–at least for now.
A new study by Lamont-Doherty Earth Observatory scientists says a record drought that ravaged Syria in 2006-2010 was likely stoked by ongoing manmade climate change, and that the drought may have helped propel the 2011 Syrian uprising.
During the second half of the 21st century, the U.S. Southwest and Great Plains will face drought worse than anything seen in times ancient or modern, a new study says.
A team of scientists has published the most comprehensive picture yet of how acidity levels vary across the world’s oceans.
The findings of a new study, appearing in Science, show that there is a broad consensus amongst climate models that this region will dry significantly in the 21st century and that the transition to a more arid climate may already be underway.