State of the Planet

News from the Columbia Climate School

radiocarbon dating

  • Fighting Ivory Trafficking with Forensic Science

    Fighting Ivory Trafficking with Forensic Science

    Last week, just days before Central Park’s big Ivory Crush, a Lamont-Doherty geochemist and his colleague sawed off samples of the confiscated ivory for DNA testing and radiocarbon dating. Their results could determine where and when each elephant was killed—which could help catch the poachers responsible.

  • Science Nabs Illegal Ivory Sellers

    Science Nabs Illegal Ivory Sellers

    A Toronto-based company has been convicted of selling illegal ivory in the first case to use a technique for dating ivory developed by a scientist at the Lamont-Doherty Earth Observatory.

Banner featuring a collage of extreme heat images.

Recent record-breaking heat waves have affected communities across the world. The Extreme Heat Workshop will bring together researchers and practitioners to advance the state of knowledge, identify community needs, and develop a framework for evaluating risks with a focus on climate justice. Register by June 15

  • Fighting Ivory Trafficking with Forensic Science

    Fighting Ivory Trafficking with Forensic Science

    Last week, just days before Central Park’s big Ivory Crush, a Lamont-Doherty geochemist and his colleague sawed off samples of the confiscated ivory for DNA testing and radiocarbon dating. Their results could determine where and when each elephant was killed—which could help catch the poachers responsible.

  • Science Nabs Illegal Ivory Sellers

    Science Nabs Illegal Ivory Sellers

    A Toronto-based company has been convicted of selling illegal ivory in the first case to use a technique for dating ivory developed by a scientist at the Lamont-Doherty Earth Observatory.