PopSci is celebrating Earth Day in all kinds of green ways! Check out our gallery to see what we're doing for the planet today, and to discover the science behind our decisions.
Tell us what you're doing to keep the planet happy this Earth Day- and every day- by leaving a comment below.
Happy Earth Day from PopSci.com!
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.