wastewater treatment
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Cleaning Up New York City’s Waters and Beyond: Q&A with Kartik Chandran
Kartik Chandran, an environmental engineer at Columbia, will discuss some of his urban wastewater treatment projects at a panel discussion Friday following the screening of a new film about Rio de Janeiro’s Guanabara Bay.
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#100. Taking a Fresh Look at Five Issues
This is the 100th blog I’ve written for the State of the Planet. It seemed like a good occasion to take a look at my five most popular blogs to see what has changed in the years since they were written. Is the news better or worse for seawater greenhouses, plastic pollution, turning wastewater into…
During COP30—the 2025 UN Climate Change Conference taking place November 10–21 in Belém, Brazil—experts from Columbia Climate School and Columbia University will be contributing to key events, sharing insights, and helping shape the dialogue toward ambitious, science-based solutions. Learn More
