State of the Planet

News from the Columbia Climate School

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  • Maybe Ben Franklin Was Wrong

    Maybe Ben Franklin Was Wrong

    A new study says that for all of its ill effects, the Laki volcanic eruption of 1783-84 probably was not the main culprit behind one of the coldest winters in hundreds of years, as many scientists — and contemporary observer Benjamin Franklin — have speculated.

  • Punjab: A tale of prosperity and decline

    The state of Punjab, located in the northwest part of the country, is known as the breadbasket of India. Punjab produces 20% of the nation’s wheat, 11% of its rice, and 11% of its cotton, from only 1.5% of its geographical area.  Punjab is in trouble, however; groundwater is rapidly decreasing. Water levels have dropped…

Collage of Turkiye beach scene and Columbia University Campus with text: UN Climate Change Conference COP31, Antalya, Turkiye, Nov 9-20, 2026

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

  • Maybe Ben Franklin Was Wrong

    Maybe Ben Franklin Was Wrong

    A new study says that for all of its ill effects, the Laki volcanic eruption of 1783-84 probably was not the main culprit behind one of the coldest winters in hundreds of years, as many scientists — and contemporary observer Benjamin Franklin — have speculated.

  • Punjab: A tale of prosperity and decline

    The state of Punjab, located in the northwest part of the country, is known as the breadbasket of India. Punjab produces 20% of the nation’s wheat, 11% of its rice, and 11% of its cotton, from only 1.5% of its geographical area.  Punjab is in trouble, however; groundwater is rapidly decreasing. Water levels have dropped…