Christian Cerria has helped Mid-Atlantic Builders shrink the number of workers needed on a work site. The firm uses smartphones and tablets to fix designs and send them back to the office without shuttling workers back and forth.
Peggy Renzi (middle) talks with her teammates Erika Hersey (left) and Erica Webster. The three are part of a team of nurses in the Bowie Health Center emergency room in Bowie, Md., who are working together to lose weight.
Gabriella Demczuk /NPR
New homebuilding reached a 4 1/2 year high in December, welcome news for an industry that lost 2 million jobs during the downturn. Despite those job losses, the sector is experiencing a labor shortage in some parts of the U.S.