Earth Day is the perfect time to think about the responsibilities we have to our planet, and each other. Most of us want to do what we can to protect the world we share, but sometimes it’s difficult to know how. Our environmental challenges can be overwhelming, but we can make progress if we all commit to making small changes. This Earth Day, check out these 52 practical tips on how you can #InvestInOurPlanet. Every one makes a difference.