The Deepwater Horizon oil rig burns in the Gulf of Mexico in April 2010. Gerald Herbert/AP hide caption

itoggle caption Gerald Herbert/AP

The building at 120 East 81st Street is among those converting from an oil- to natural-gas-burning furnace. Jeff Brady/NPR hide caption

itoggle caption Jeff Brady/NPR

Lela Petersen, owner of the Anything And Everything store in Flagler, Colo., expects the cost of health insurance for her and her husband to drop by my more than half next year. Jeff Brady hide caption

itoggle caption Jeff Brady

Apologetic signs posted at a gas station that ran out of gas on Nov. 1, 2012, in the Queens borough of New York. Jason DeCrow/AP hide caption

itoggle caption Jason DeCrow/AP

The Deepwater Horizon oil rig is seen burning in the Gulf of Mexico in April 2010. A second phase of the BP trial, which started this week, looks at just how much oil spilled into the Gulf. Gerald Herbert/AP hide caption

itoggle caption Gerald Herbert/AP

Susan Mull is a substitute teacher in Lancaster County, Pa. She's lived with HIV for 21 years, the past 13 without health insurance. She says an expansion of Medicaid in Pennsylvania would be "life-changing." Jeff Brady/NPR hide caption

itoggle caption Jeff Brady/NPR

One Amish family in Lancaster County, Pa., has three horse-pulled buggies they store in a barn. They all have electric lights powered by rechargeable batteries. One of the buggies even has battery-powered windshield wipers. Jeff Brady/NPR hide caption

itoggle caption Jeff Brady/NPR

Sara Busch of Havertown, Pa., owns a Chevy Volt, an electric hybrid. Like a lot of Americans, she's buying less gasoline than she used to, which means she's paying less in gas taxes. Jeff Brady/NPR hide caption

itoggle caption Jeff Brady/NPR