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Cloudy, With a Chance of Microbes (1 of 2)

Caption: Brent Christner, lead author of the study, demonstrating the researchers’ mode of transportation in the field. This image relates to an article that appeared in the Feb. 29, 2008, issue of the journal Science, published by AAAS. The study, by Dr. Brent Christner and colleagues at Louisiana State University in Baton Rouge, La., was titled "Ubiquity of Biological Ice Nucleators in Snowfall."

Credit: Image courtesy of Brent Christner, Louisiana State University

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