A coal scraper machine works on a pile of coal at American Electric Power's Mountaineer coal power plant in 2009 in New Haven, W.Va. The state, in which coal mining is a major industry, is one party planning to sue the Environmental Protection Agency regarding new power plant regulations announced Monday. Saul Loeb/AFP/Getty Images hide caption

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You don't have to be outdoors to be hurt or injured by a nearby lightning strike, like this one in New Mexico. The pain for survivors can be lifelong. Marko Korosec/Barcroft Media/Landov hide caption

itoggle caption Marko Korosec/Barcroft Media/Landov

The Penn State University campus in State College, Pa. A new state law requires university professors to get a background check every three years and have their fingerprints taken. Gene J. Puskar/AP hide caption

itoggle caption Gene J. Puskar/AP

Drexel Siok, environmental scientist at Delaware National Estuarine Research Reserve, holds a horseshoe crab that's been tagged on Kitts Hummock Beach near Dover, Del. During the annual count volunteers make a note if they find a tagged crab. Researchers then use the information to learn where crabs are moving over time. Jeff Brady/NPR hide caption

itoggle caption Jeff Brady/NPR