census
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More and More People Missing From Official Census Data
Foreign aid cuts will worsen “quiet crisis,” according to experts.
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GRID3 Project Aims to Put Everyone on the Map
Detailed population data from the project is helping to protect against disease and plan for new schools in low- and middle-income countries. It may also enhance food security and disaster response.
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Tools of the Trade: Data Sets are Tools, Too
This installment takes you into the world of population modeling at CIESIN, where data rules supreme.
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
