climate12
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Coronavirus and Wildfires Combine to Pose Potential Threat to Indigenous Lives and Lands
But experts say it’s not too late to reduce the most serious effects of these compound issues.
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A New Primer on Climate Change Science
A new primer lays out the basics of climate science in compact form.
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Potentially Fatal Combinations of Humidity and Heat Are Emerging Across the Globe
A new study has identified thousands of incidents of previously rare or unprecedented extreme heat/humidity combinations in parts of Asia, Africa, Australia, South America and North America, including in the U.S. Gulf Coast region.
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Interactive Map: Daily Maximum Wet-Bulb Temperature
View an interactive world map that shows where extreme, sometimes potentially fatal, mixtures of heat and humidity are emerging across the globe.
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Shrinking Snowcaps Fuel Harmful Algal Blooms in Arabian Sea
Driven by changing climate, a uniquely resilient organism is taking over the Arabian Sea, disrupting food chains, fisheries, oil refineries and water desalination plants.
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How Catastrophic Floods May Have Carved Greenland’s ‘Grand Canyon’
In a new study, researchers propose a mechanism for how mega-canyons under northern Greenland’s ice sheet formed: from a series of catastrophic outburst floods that suddenly and repeatedly drained lakes of meltwater.
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Climate-Driven Megadrought Is Emerging in Western U.S., Says Study
Scientists say a long-feared megadrought, worse than anything in recorded history, seems to be starting up in southwestern North America.
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Ozone Treaty Stopped Jet-Stream Drift in Southern Hemisphere
Researchers long ago predicted that the 1987 Montreal Protocol, banning ozone-depleting gases, would reverse a worrisome trend in Southern Hemisphere winds. A new study shows they were right.
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Video: Launch of NextGen Climate Forecasting System in Colombia
In August of 2019, Colombia’s national meteorological service, IDEAM, launched a state-of-the-art climate forecasting system called NextGen.
COP31, the 2026 United Nations Climate Change Conference, aims to advance dialogue, strengthen consensus, and accelerate climate action on a global scale. From November 9–20, 2026 in Antalya, Türkiye, heads of state, ministers, scientists, business leaders, and civil society will gather to advance efforts in emission targets, climate finance, and adaptation and resilience. Once again, our experts, students, and global thought leaders from Columbia Climate School and across Columbia University are contributing to key events, sharing insights, and helping shape the dialogue toward ambitious, science-based solutions. Learn More
