Marc Spiegelman led another large crowd at Open House through a fan-favorite demonstration of how rocks inside the Earth can behave as liquid or solid. With quick movements, he could dance on the material, but when he stopped, he sank right in.
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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!
