natural hazards3
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New Research Ship Will Look Deep Under Oceans
Earthquakes, Tsunamis and Earth’s Evolution in Sharper Focus
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Mapping Socioeconomic Data Reveals Trends
In October 2006, the U.S. Census Bureau announced that the nation’s population had reached 300 million people — a number that has tripled since 1915. This milestone raises critical questions regarding where people live —or don’t live — in the U.S. that help feed high-level decisions on where to allocate government resources on education, health…

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