chemical indicators / deep coring site / online video / chemical dating tools / air travel / chemical means / chemical / greenhouse gas concentrations / chemicals / energy / /
NaturalFeature
Mt. Pinatubo / Mount Tambora / Mount Pinatubo / Mt. Vesuvius / /
Organization
Research Institute / Ice Drilling Program Office / National Aeronautics and Space Administration / Smithsonian / /
Person
Wilson Bentley / Joe McConnell / Mary Shelley / Mary Albert (Dartmouth) / Linda Morris (Dartmouth) / Ken Libbrecht / /