A new study revealed that social media use can affect sleep quality in teenagers

A coffee shop hosted a "charity fundraiser" where $1 from each drink sold went to a local schoolA university opened a new career center to help students find internships and jobs

A taxi company added a "lost and found" feature to its app to help riders recover lost itemsA fashion store started selling "sustainable denim" made from recycled cottonA library started offering "digital literacy classes" for seniors learning to use smartphones

A farm began selling "homemade salsa" made from its own tomatoes and peppersA fire department hosted a "fire safety fair" that taught 500 children about fire prevention

A software company partnered with a school district to provide free software for students

A community organized a "charity run" that had 300 participants and raised $12,000 for cancer researchPodcast releases new episode with interview of tech industry leader

Research indicates that volunteering improves self esteem and happinessPet sitting service offers overnight care for pets while owners travel

Park rangers lead educational hikes to teach visitors about local flora and faunaNewspaper reports success of local farmers market in supporting small family farms

(责任编辑：江得胜)