The Point Breeze-based warehouse for used building materials has teamed up with MARC USA for a year-long “The Environment Is No Joke” campaign, which puts goofy knock-knock jokes on doors that were donated to Construction Junction, then decorated by local artists. Five such featured doors — including a work in progress with a video screen and digital experience — will be displayed throughout Downtown’s Cultural District during Highmark First Night Pittsburgh on New Year’s Eve.

via Construction Junction’s painted doors use jokes to promote recycling | TribLIVE.