Science

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Getty Images Last night, for the first time in 372 years, the winter solstice coincided with a total lunar eclipse. For three hours and 28 minutes in the wee hours of Tuesday morning, the earth's umbral shadow crept across…

A pelican rests on an oil retention boom on July 25, 2010 near Grand Isle, Louisiana. Photo by Mario Tama/Getty Images. Attorney General Eric Holder and EPA Administrator Lisa P. Jackson announced a major lawsuit against BP, Transocean and other…

Dec 14

As a cold front settles across the Eastern seaboard, we turn wistfully to thoughts of the sun for this week’s Just Ask! science post. This one comes from a reader, Amanda Teicher, who wants to know: “How does sunscreen work?”…