Happy Earth Day, err’body! Established in 1970, the official Earth Day holiday celebrates its 35 year anniversary today, and despite the fact that it snowed in Chicago this morning (ergh), we’re still happy to pay our respects to our favorite planet. Did you know more than 192 countries around the world celebrate this holiday? Pretty cool! To continue the celebration, we thought we’d round up some of our most awesome earth and nature appreciating designs. Check ‘em out below, and don’t forget – for every tee you purchase this week, we’ll donate $1 to a local conservation organization!