State of the Planet

News from the Columbia Climate School

Climate228

  • Connecting the Dots: Extreme Weather and Climate Change

    Connecting the Dots: Extreme Weather and Climate Change

    Professor Ben Orlove, anthropologist and co-director of the Earth Institute’s Center for Research on Environmental Decisions discusses the connection between extreme weather and global warming, and public perception of climate change.

  • Tree-Ring Science in a Log Yard?

    Tree-Ring Science in a Log Yard?

    The cool, snowy weather really put a crimp in our plans. Dario, Tuncay, Cengis, and others spent two days trying to find potential sampling locations before Nesibe and I arrived. Even though it had been well above freezing during the day and above freezing at night, the snow had only retreated so far in the…

  • Ice cores…finally

    Ice cores…finally

    Today I got another chance to go out with team CASIMBO to drill ice-cores. The weather was beautiful with no wind, a few clouds, bright sunshine and a balmy temperature of about 5 degrees F. When I first saw sea ice near Alert a few years ago, I was very surprised. It wasn’t anything like…

  • Drilling Ancient Mud from Seafloor No Easy Task

    Drilling Ancient Mud from Seafloor No Easy Task

    Yesterday we left our first study region with new samples from the seafloor and a healthy respect for the ocean currents that can erode sediment deep in the ocean. The seafloor we surveyed was heavily eroded and we had to look carefully before finding sites that were promising enough to try sampling. Even then we…

  • Our Best Flight Yet

    Our Best Flight Yet

    Evidence of the retreat of glaciers since the last glacial maximum (check), flying over sites of ancient Inuit, Norse and present day settlements (check), and a personal recollection of my own past in this location (check).

  • Emissions from the Cement Industry

    Emissions from the Cement Industry

    A single industry accounts for around 5 percent of global carbon dioxide (CO2) emissions. It produces a material so ubiquitous it is nearly invisible: cement. It is the primary ingredient in concrete, which in turn forms the foundations and structures of the buildings we live and work in, and the roads and bridges we drive…

  • Ph.D. Candidate Studies Natural Carbon Storage in Oman

    Ph.D. Candidate Studies Natural Carbon Storage in Oman

    Amelia Paukert considers herself “environmentally inclined” because of her early exposure to nature and horseback riding in her native Napa Valley, California. Her fascination with the water cycle helped spark her passion for environmental science.

  • Albany to Alert

    Albany to Alert

    On the way from Kangerlussuaq to Thule we fly along the coast of Greenland, over Baffin Bay, where the Arctic starts to show its icy face. For me, Greenland is fascinating for its mild temperatures, diverse wildlife in the south and breathtaking frozen state in the north. I also like the Danish pastries served in…

  • Through the Looking Glass: Peering Through the Bottom of the Ocean

    Through the Looking Glass: Peering Through the Bottom of the Ocean

    Alice stepped through the mirror to see the world beyond, and we peer through the bottom of the ocean to see what is below. Short pulses of sound from the ship are focused on the seafloor, and we listen to the echo and reverberations that return.

Colorful icons representing nature, sustainable living, and renewable energy with text "Earth Day 2026"

The first Earth Day in 1970 ignited a movement to stop polluting our planet. Today, our scientists and experts are tackling the most pressing challenges to achieve real-world impact. This Earth Day, join us in our commitment to realizing a just and sustainable future for our planet. Visit our Earth Day website for ideas, resources, and inspiration.

  • Connecting the Dots: Extreme Weather and Climate Change

    Connecting the Dots: Extreme Weather and Climate Change

    Professor Ben Orlove, anthropologist and co-director of the Earth Institute’s Center for Research on Environmental Decisions discusses the connection between extreme weather and global warming, and public perception of climate change.

  • Tree-Ring Science in a Log Yard?

    Tree-Ring Science in a Log Yard?

    The cool, snowy weather really put a crimp in our plans. Dario, Tuncay, Cengis, and others spent two days trying to find potential sampling locations before Nesibe and I arrived. Even though it had been well above freezing during the day and above freezing at night, the snow had only retreated so far in the…

  • Ice cores…finally

    Ice cores…finally

    Today I got another chance to go out with team CASIMBO to drill ice-cores. The weather was beautiful with no wind, a few clouds, bright sunshine and a balmy temperature of about 5 degrees F. When I first saw sea ice near Alert a few years ago, I was very surprised. It wasn’t anything like…

  • Drilling Ancient Mud from Seafloor No Easy Task

    Drilling Ancient Mud from Seafloor No Easy Task

    Yesterday we left our first study region with new samples from the seafloor and a healthy respect for the ocean currents that can erode sediment deep in the ocean. The seafloor we surveyed was heavily eroded and we had to look carefully before finding sites that were promising enough to try sampling. Even then we…

  • Our Best Flight Yet

    Our Best Flight Yet

    Evidence of the retreat of glaciers since the last glacial maximum (check), flying over sites of ancient Inuit, Norse and present day settlements (check), and a personal recollection of my own past in this location (check).

  • Emissions from the Cement Industry

    Emissions from the Cement Industry

    A single industry accounts for around 5 percent of global carbon dioxide (CO2) emissions. It produces a material so ubiquitous it is nearly invisible: cement. It is the primary ingredient in concrete, which in turn forms the foundations and structures of the buildings we live and work in, and the roads and bridges we drive…

  • Ph.D. Candidate Studies Natural Carbon Storage in Oman

    Ph.D. Candidate Studies Natural Carbon Storage in Oman

    Amelia Paukert considers herself “environmentally inclined” because of her early exposure to nature and horseback riding in her native Napa Valley, California. Her fascination with the water cycle helped spark her passion for environmental science.

  • Albany to Alert

    Albany to Alert

    On the way from Kangerlussuaq to Thule we fly along the coast of Greenland, over Baffin Bay, where the Arctic starts to show its icy face. For me, Greenland is fascinating for its mild temperatures, diverse wildlife in the south and breathtaking frozen state in the north. I also like the Danish pastries served in…

  • Through the Looking Glass: Peering Through the Bottom of the Ocean

    Through the Looking Glass: Peering Through the Bottom of the Ocean

    Alice stepped through the mirror to see the world beyond, and we peer through the bottom of the ocean to see what is below. Short pulses of sound from the ship are focused on the seafloor, and we listen to the echo and reverberations that return.