An interesting albeit sobering keynote talk yesterday at the Wooster Campus Scarlet, Gray and Green Fair by Paolo Gabrielli, a research scientist with Ohio State’s Byrd Polar Research Center. He called ice cores, his area of expertise, “a beautiful recorder of what is happening in the atmosphere and what has happened in the past”; said ice cores, for example, reveal air pollution from Asia in the Himalayas and from North America in Greenland; also said, based on such findings, “There are no pristine environments on Earth anymore”; and said ice cores indicate global temperature increases “that are unprecedented in the past 2,000 years.” He’s part of the Byrd center’s Ice Core Paleoclimatology Group.