For over 50 years, Americans have celebrated Earth Day, taking a day to remember that we have this one planet and should take care of it. There are lots of different ways to recognize Earth Day, from joining a party at a park to volunteering at a nature clean-up to turning off major appliances for the day. But, we know, it takes more than one day to look out for the planet; we have to develop certain habits and make choices every day to really have an impact. As an editor at a finance publication, I find the edicts of "green" living fascinating — because so many of them also double as good financial advice. You need to conserve energy overuse in the same way you need to "conserve" overspending, for example, and "reusing" items gives the earth returns in the same sort of way reinvesting dividends and compound interest give you returns. From just $107.88 $24.99 for Kiplinger Personal Finance Become a smarter, better informed investor.…