Cool Unless March for Science Earth Day 2017 mug. Makes a perfect science day gift for science March Earth Day or anytime you want to display this important message. This Great Earth Day 2017 mug can be used at work or at home. Show the world that you support global reforestation projects. As an Earth Day supporter, it is our aim to increase habitat space for species and combat climate change. Every tree counts! The earth needs our help. It has entered a sixth mass extinction brought on by global human activity. Join the fight to help protect hundreds of species while we still can. Everyone will smile at this fun and inspiring March for Science Earth Day mug.