CO22
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Solving the Mysteries of Carbon Dioxide
About 50 percent of the CO2 produced by human activity remains in the atmosphere, warming the planet. But scientists don’t know where and how oceans and plants have absorbed the rest of the manmade CO2. To try to answer these questions, on July 2, 2014, NASA launched the $468 million Orbiting Carbon Observatory-2 (OCO-2), its…
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Crossing 400ppm: Welcome to the Pliocene
“Right now, we’re living in a world of a Pliocene atmosphere,” scientist Maureen Raymo of the Lamont-Doherty Earth Observatory tells the Yale Forum on Climate Change and the Media. “But the whole rest of the climate system — the oceans are trying to catch-up, the ice sheets are waning, and everything is trying to catch…
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What’s the Real Story With Clean Coal?
The Obama administration will propose new rules to limit carbon emissions from coal-fired power plants. But is “clean coal” technology up to the job?
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Agriculture and its Discontents: Greenhouse Gas Emissions
In 1943, Norman Borlaug began his research into new varieties of wheat that could feed the burgeoning population of Mexico. Invited by the Mexican government and funded largely by international philanthropic organizations, Borlaug’s research began what we now refer to as the Green Revolution. Over the next 13 years, Mexico became agriculturally self-sufficient, and in…
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
