State of the Planet

News from the Columbia Climate School

Ecology61

  • 8 Ways to Look at 7 Billion

    8 Ways to Look at 7 Billion

    Interested in learning more about the world’s population? Here are some recent articles about the history, context and implications of 7 billion people living on earth.

  • Green Sidewalk is Electrifying

    Green Sidewalk is Electrifying

    Utilizing innovative technology to transform physical impact into electricity, PaveGen is literally, as the company tagline describes, “Generating Energy from footsteps.”

  • Ecological and Urban Resilience

    Ecological and Urban Resilience

    Resilience science has been evolving over the past decade, expanding beyond ecology to reflect systems of thinking in fields such as economics and political science. And, as more and more people move into densely populated cities, using massive amounts of water, energy, and other resources, the need to combine these disciplines to consider the resilience…

  • The 7 Billion Challenge

    The 7 Billion Challenge

    The rapid rise in the world’s population to 7 billion — from 6 billion a dozen years ago — poses enormous challenges. In this video, Earth Institute Director Jeffrey D. Sachs talks about the stresses our population already puts on the planet, and the mission of the institute to promote sustainable development.

  • Join a Conversation About 7 Billion People

    Join a Conversation About 7 Billion People

    The world’s population will reach 7 billion this year, and the UN estimates continued growth, primarily in less-developed regions. What will this steep population growth mean for our environmental, economic and social systems? Join the conversation on Oct. 17.

  • Cycle of Abuse Among Nazca Boobies

    Cycle of Abuse Among Nazca Boobies

    Researchers studying Nazca boobies of the Galápagos Islands found high correlations between degree of aggressive behavior among adults and the amount of abuse they endured as nestlings. The findings have implications for those who study human psychology and behavior, as some social scientists argue that abused children are statistically more likely to become abusers later…

  • Polyandrous Mouse Lemurs – The Larger the Better

    Polyandrous Mouse Lemurs – The Larger the Better

    Researchers report that larger female mouse lemurs mate with more male partners at once than smaller females. The findings have implications for polyandry and other mating systems.

  • Critter Corner: News Roundup on Biodiversity – Week of 10/3

    Critter Corner: News Roundup on Biodiversity – Week of 10/3

    Read more about how humans are just modified fish, the discovery of a rare seahorse, the relationship between climate change, elk, and aspen, and the the structure of ambrosia beetle colonies in this week’s edition of The Critter Corner.

  • Imagining the Hudson before Humans

    Imagining the Hudson before Humans

    Pollution is just one way that humans have transformed the Hudson River. A small way, it turns out. We have altered the Hudson’s shape, the speed of its flow and the mix of plants and trees along its banks. In a new book, Environmental History of the Hudson River, two Lamont-Doherty scientists who contributed chapters—Frank…

Overhead view of Columbia campus with text Columbia Climate School Class Day 2026: Congratulations Graduates

Congratulations to our Columbia Climate School Class of 2026 and all of our 2026 Columbia University graduates! Learn more about our May 15 Climate School Class Day celebration. 💙 #Columbia2026 #ColumbiaClimate2026

  • 8 Ways to Look at 7 Billion

    8 Ways to Look at 7 Billion

    Interested in learning more about the world’s population? Here are some recent articles about the history, context and implications of 7 billion people living on earth.

  • Green Sidewalk is Electrifying

    Green Sidewalk is Electrifying

    Utilizing innovative technology to transform physical impact into electricity, PaveGen is literally, as the company tagline describes, “Generating Energy from footsteps.”

  • Ecological and Urban Resilience

    Ecological and Urban Resilience

    Resilience science has been evolving over the past decade, expanding beyond ecology to reflect systems of thinking in fields such as economics and political science. And, as more and more people move into densely populated cities, using massive amounts of water, energy, and other resources, the need to combine these disciplines to consider the resilience…

  • The 7 Billion Challenge

    The 7 Billion Challenge

    The rapid rise in the world’s population to 7 billion — from 6 billion a dozen years ago — poses enormous challenges. In this video, Earth Institute Director Jeffrey D. Sachs talks about the stresses our population already puts on the planet, and the mission of the institute to promote sustainable development.

  • Join a Conversation About 7 Billion People

    Join a Conversation About 7 Billion People

    The world’s population will reach 7 billion this year, and the UN estimates continued growth, primarily in less-developed regions. What will this steep population growth mean for our environmental, economic and social systems? Join the conversation on Oct. 17.

  • Cycle of Abuse Among Nazca Boobies

    Cycle of Abuse Among Nazca Boobies

    Researchers studying Nazca boobies of the Galápagos Islands found high correlations between degree of aggressive behavior among adults and the amount of abuse they endured as nestlings. The findings have implications for those who study human psychology and behavior, as some social scientists argue that abused children are statistically more likely to become abusers later…

  • Polyandrous Mouse Lemurs – The Larger the Better

    Polyandrous Mouse Lemurs – The Larger the Better

    Researchers report that larger female mouse lemurs mate with more male partners at once than smaller females. The findings have implications for polyandry and other mating systems.

  • Critter Corner: News Roundup on Biodiversity – Week of 10/3

    Critter Corner: News Roundup on Biodiversity – Week of 10/3

    Read more about how humans are just modified fish, the discovery of a rare seahorse, the relationship between climate change, elk, and aspen, and the the structure of ambrosia beetle colonies in this week’s edition of The Critter Corner.

  • Imagining the Hudson before Humans

    Imagining the Hudson before Humans

    Pollution is just one way that humans have transformed the Hudson River. A small way, it turns out. We have altered the Hudson’s shape, the speed of its flow and the mix of plants and trees along its banks. In a new book, Environmental History of the Hudson River, two Lamont-Doherty scientists who contributed chapters—Frank…