The GasBuddy app and website rely on crowdsourcing — people across the country sending in gas prices. NPR hide caption

toggle caption NPR

A driver pumps gas in Los Angeles, where prices are among the highest in the country, topping $4 a gallon. Frederic J. Brown/AFP/Getty Images hide caption

toggle caption Frederic J. Brown/AFP/Getty Images

A 1974 Gremlin covered with Mardi Gras beads is part of the auction lot of items from the former Kenner Mardi Gras Museum. The car is expected to draw several bids. Jeff Brady/NPR hide caption

toggle caption Jeff Brady/NPR

A Shell-owned ethylene cracker plant on Pulau Bukom, Singapore. Several U.S. states are competing for a similar plant the company plans to build in northern Appalachia. Courtesy of Shell Chemicals hide caption

toggle caption Courtesy of Shell Chemicals

The town of Nitro has its beginnings in 1917, when the U.S. government created it as a place to locate a munitions plant. Jeff Brady/NPR hide caption

toggle caption Jeff Brady/NPR

A woman pays her respects at a statue of Joe Paterno outside Beaver Stadium on the Penn State University campus in State College, Pa., after learning of his death on Sunday. Gene J. Puskar/AP hide caption

toggle caption Gene J. Puskar/AP

The Syncrude tar sands mine in Alberta, Canada. Alberta's tar sands would supply the oil for the prospective Keystone XL pipeline. Todd Korol/Reuters/Landov hide caption

toggle caption Todd Korol/Reuters/Landov

NPR thanks our sponsors

Become an NPR sponsor