For the past 12 summers, artists from around the world have converged on Trenton to participate in the Jersey Fresh Jam. Recycling company TerraCycle is hosting the annual Jam, which is New Jersey’s largest showcase of hip-hop art and culture, on Aug. 12. In partnership with Trenton-based graffiti artists Leon Rainbow and Vicious Styles Crew, TerraCycle is providing its headquarters as a canvas for talent to express their artistic freedom.