"The optimist in me says in three years we can train this tool to read mammograms as well as an average radiologist," says Connie Lehman, chief of breast imaging at Massachusetts General Hospital in Boston.
Kayana Szymczak for NPR
Jesse Vega checks out a vehicle at an Uber "Work On Demand" recruitment event March 10 in South Los Angeles. The company is researching ways to get rid of its surge pricing, a feature that drivers like but that can make costs unpredictable for consumers.
Mark Ralston/AFP/Getty Images