In Philadelphia, businesses are working together to save the lives of countless birds. Nearly 20 buildings in the city agreed to turn off “unnecessary lights” from midnight to 6 a.m. until May 30th. A professor explains birds flying in conditions with fog or rain must fly at lower altitudes. The bright city lights often disorient the birds, causing them to fly into buildings and walls. Thousands of birds died in October of last year because of this confusion. The city hopes to save the lives of some one-hundred million birds who’ll be migrating over the city this spring.