Celebrating its 15 years of protecting Wisconsin’s natural resources by working with legislators and activism, the Wisconsin League of Conservation Voters is holding a “birthday party” and conference featuring the “green” hip-hop artist Reverend Lennox Yearwood Jr., President and CEO of the Hip Hop Caucus. The gathering will be Thursday, June 8, from 5:30-8:30 at the Goodman Center. Pre-registering is suggested.