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  1. Mystic Stuff

    Scientists describe and ponder their own brushes with spiritual, mystical, and psychic happenings in the online journal called The Archives of Scientists’ Transcendent Experiences (TASTE). Psychologist Charles T. Tart of the University of California, Davis, produces the journal and hopes to build a database of accounts by bona fide, show-me-the-data researchers for future investigations into […]

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  2. 19192

    Your article shows hazy pictures from Great Smoky Mountains National Park and says the cause of the haze is “volatile organic compounds released by trees.” I’m the air-quality specialist in the park, and I know that 60 percent of the particle mass in the air is sulfate from power plants, not trees, and 80 percent […]

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  3. Earth

    Solving Hazy Mysteries

    Aerosols such as smoke, soot, and sea spray make for hazy vistas and stunning sunrises, but they also play major roles in Earth's climate and atmospheric chemistry.