Williams extracts a core from a massive red oak. Specimens up to 400 years old can be found in isolated spots, but it is the last 80-some years the scientists are mainly after
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On Saturday, October 17, 2026 from 10am to 4pm, Lamont-Doherty Earth Observatory Open House—our biggest, best science fun and discovery event of the year—will take place on our beautiful campus in Palisades, NY. Mark your calendar and join us for this free, family-friendly celebration of science! RSVP Today!