climate change133
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Off to Lima, World’s Second Largest Desert City
18th June 2011 Lima, Peru Our 2011 field season is underway. After a full day’s travel from New York, we arrived in Lima, the capital of Peru. This sprawling city perched on the edge of the Pacific Ocean is home to more than nine million people and, after Cairo, is the largest desert city in…
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Deciphering Past Climate Change in the High Andes
High above the tropical lowlands, the Andes form a formidable topographic barrier separating the coastal deserts in the west from the Amazon rainforest to the east. The Peruvian Andes are the highest peaks in all the tropics and, despite their proximity to the equator, are mantled with snow and ice. However, the glaciers clinging to…
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Climate News Roundup: Week of 6/12
California re-embraces carbon market, Reuters, June 13 After a court ordered California to consider alternatives to cap and trade, the Air Resources Board published a 120-page policy analysis on Monday, examining five approaches to cut emissions, including a carbon tax, direct regulation of power plants and big factories, and a cap-and-trade system. The report concludes…
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To the tip of the Andes
In the semi-arid Andes, glaciers store water and control the runoff of mountain rivers. They feed water to big cities such as Lima and Arequipa and irrigate the surrounding lowlands. But as the planet warms, mountain glaciers in the tropics are receding steadily. Despite their paramount importance, we don’t know the scale and the rate…
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Climate Change Threatens Fragile Ecosystem in the Andes
A new audio slideshow about the páramo ecosystem in the Andes, at risk of becoming drier because of changing climate conditions
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Losing Our Coral Reefs
Coral reefs, the “rainforests of the sea,” are some of the most biodiverse and productive ecosystems on earth. But tragically, they are in crisis.
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Time and Technology and the Really Down Deep
Two years before Google Earth was launched, Bill Ryan and Suzanne Carbotte, oceanographers at the Lamont-Doherty Earth Observatory, began a project to transform the way we look at the ocean. They started collecting reams of data that had been gathered by scientists sailing on research vessels all over the world since the 1980s, one ship…
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Rhone Glacier Finely Tuned to Climate Changes
By chiseling hunks of stone from recently exposed bedrock near the edge of the Rhone Glacier, scientists were able to decipher the comings and goings of the ice over the past 11,000 years. That should help predict what will happen to glaciers in the warming world to come.
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Cities Lead on Climate Problems, and Solutions
New Report Analyzes Urban Areas Across the World
Congratulations to our Columbia Climate School Class of 2026 and all of our 2026 Columbia University graduates! Learn more about our May 15 Climate School Class Day celebration. 💙 #Columbia2026 #ColumbiaClimate2026
