This nighttime NASA satellite image from 2012 shows lights from drilling sites and natural gas flaring along the Eagle Ford Shale. NASA hide caption

itoggle caption NASA

Students participate in orchestra practice at Dr. John Folks Middle School in suburban San Antonio. The school is brand new and was built with explosive growth in mind — the student population is expected to double to 1,200 within five years. Melissa Block/NPR hide caption

itoggle caption Melissa Block/NPR

Soldiers participate in physical therapy while using a prosthetic brace called the Intrepid Dynamic Exoskeletal Orthosis (IDEO), which allows them to use and strengthen severely injured legs. John Moore/Getty Images hide caption

itoggle caption John Moore/Getty Images