PHILADELPHIA--(BUSINESS WIRE)--This Saturday, April 25, volunteers will contribute their time and energy at more than 750 project sites across the globe as part of Comcast Cares Day. Taking place each April during National Volunteer Month and on the heels of Earth Week, Comcast Cares Day is the nation’s largest single-day corporate volunteer effort and part of the Company’s year-round commitment to community service. More than 90,000 Comcast NBCUniversal employees, their family and friends, and