State of the Planet

News from the Columbia Climate School

Center for Sustainable Urban Development5

  • Map & App Help People Track Transit in Nairobi

    Map & App Help People Track Transit in Nairobi

    Commuters and others traveling in and around Nairobi often rely on an unofficial network of minibuses and minivans, called matatus, that have no centrally controlled schedules, fares or route plans. But a new application developed for use on cellphones with Google Maps can now help them find their way.

  • ‘This is a wake-up call – don’t hit the snooze button’

    ‘This is a wake-up call – don’t hit the snooze button’

    For years before Hurricane Sandy charged ashore on Monday, researchers from the Earth Institute knew what was coming. As the region struggles to recover from this “superstorm,” we asked some of them to consider the lessons we can learn as we move forward.

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

  • Map & App Help People Track Transit in Nairobi

    Map & App Help People Track Transit in Nairobi

    Commuters and others traveling in and around Nairobi often rely on an unofficial network of minibuses and minivans, called matatus, that have no centrally controlled schedules, fares or route plans. But a new application developed for use on cellphones with Google Maps can now help them find their way.

  • ‘This is a wake-up call – don’t hit the snooze button’

    ‘This is a wake-up call – don’t hit the snooze button’

    For years before Hurricane Sandy charged ashore on Monday, researchers from the Earth Institute knew what was coming. As the region struggles to recover from this “superstorm,” we asked some of them to consider the lessons we can learn as we move forward.