Global Warming8
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Climate Change May Soon Hit Billions of People. Many Cities Are Already Taking Action.
Billions of people in thousands of cities around the world will soon be at risk from climate-related heat waves, droughts, flooding, food shortages and energy blackouts by mid-century, but many cities are already taking action to blunt such effects, says a new report from a consortium of international organizations.
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How Will People Move as Climate Changes?
A new model estimates how many climate migrants there will be, where they are likely to go, and what effects they might have on the places to which they move.
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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.
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Climate-Related Flooding May Quickly Disrupt Global Trade Chains
Intensifying river floods caused by global warming may hamper national economies worldwide, and effects might propagate through global trade and supply networks, a new study says.
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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.
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U.S., UK Scientists Join to Study Possible Collapse of Massive Antarctic Glacier
An international collaboration will study the wasting of the Thwaites glacier, which already accounts for around 4 percent of current global sea-level rise, and could collapse within decades or centuries.
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Will Electric Vehicles Take Over the World?
Many countries are banning fossil fuel run cars in favor of electric vehicles. How does the future look for EVs and how green are they really?
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North American Coasts Are Absorbing Large Amounts of Carbon
Coastal waters play an important role in the carbon cycle by absorbing carbon into sediments or transferring it to the open ocean, a new study confirms.

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

