Happy Earth Day! As you know, we’re celebrating Earth Day at Zazzle by planting a tree for every shirt that is purchased on the site when you use the code PLANTATREE09 at checkout (learn more). So get your Earth Day shirt, organic shirt, sustainable shirt, or just plan funny t-shirt on Zazzle today because last time I checked you can’t turn CO2 into oxygen or photosynthesize energy like a tree can.
