Now that yesterday’s rain has passed, we should have some fine weather for today’s Greenfest Philly. The local area festival is where you can go to learn about living sustainably while having a good time. The music will be provided by Clean Air Council for “Earth Jam II.” To celebrate the organization’s 45th anniversary, they’ve recruited local pop-rockers Cheers Elephant, hip-hop band Abstract Verses, whiskey rock outfit Mountjoy, and funky soul rockers You Do You. Now, go save the Earth! Or at least get some tips to help out those trying. Headhouse Square, 2nd and South St., 11am – 5pm, Free, All Ages – H.M. Kauffman