dendrochronology3
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A New Global Team Tracks Temperature Change Through Time
A new international consortium of scientists is bringing the history of temperature fluctuations across the entire Northern Hemisphere to life.
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Translating Nature’s Historians: The Tree Ring Lab Turns 40
In its first 40 years, the Lamont Tree Ring Lab tracked changing climates around the world, building an international reputation as a global leader in research, training and technology.
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Tree Rings on Hawai’i Could Hold New Knowledge About El Niño
Annual tree rings are a rare find in the tropical islands of the eastern Pacific. The new discovery of trees with annual rings on a Hawaiian volcano could provide new climate data from a part of the world where much of the variability of the El Niño-Southern Oscillation originates.
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A Scientist Who Traveled the World to Study the Forest, and the Trees
Gordon Jacoby, 1934-2014
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
