State of the Planet

News from the Columbia Climate School

tropics

  • Photo Essay: The Re-Greening of Puerto Rico

    Photo Essay: The Re-Greening of Puerto Rico

    Researchers survey the damage to Puerto Rico’s forests in the aftermath of Hurricane Maria.

  • An Ecological Traffic Jam in the Warming Tropics?

    An Ecological Traffic Jam in the Warming Tropics?

    The tropics are already hot, and they’re getting hotter as global temperatures rise. A new study offers a glimpse into how seriously a couple more degrees could disrupt the region’s ecological map.

  • Tropical Rainfall from Hours to Millennia

    Tropical Rainfall from Hours to Millennia

    Most of Earth’s rainfall occurs in a tropical zonal band that circles the Earth. Understanding how this band will responds to climate change requires us to combine time scales from hours to millennia.

  • Seeing the Amazon’s Future Through the Fog

    Seeing the Amazon’s Future Through the Fog

    Scientists have developed a new approach to modeling the water and carbon cycles in the Amazon that could lead to better climate forecasts and improved water resource management.

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

  • Photo Essay: The Re-Greening of Puerto Rico

    Photo Essay: The Re-Greening of Puerto Rico

    Researchers survey the damage to Puerto Rico’s forests in the aftermath of Hurricane Maria.

  • An Ecological Traffic Jam in the Warming Tropics?

    An Ecological Traffic Jam in the Warming Tropics?

    The tropics are already hot, and they’re getting hotter as global temperatures rise. A new study offers a glimpse into how seriously a couple more degrees could disrupt the region’s ecological map.

  • Tropical Rainfall from Hours to Millennia

    Tropical Rainfall from Hours to Millennia

    Most of Earth’s rainfall occurs in a tropical zonal band that circles the Earth. Understanding how this band will responds to climate change requires us to combine time scales from hours to millennia.

  • Seeing the Amazon’s Future Through the Fog

    Seeing the Amazon’s Future Through the Fog

    Scientists have developed a new approach to modeling the water and carbon cycles in the Amazon that could lead to better climate forecasts and improved water resource management.