Seven million. That's the number of Earthlings added to our lovely planet each month, give or take. This staggering growth rate shines a very large, very bright spotlight on our spinning blue marble's very limited resources, namely food, water, and energy. For example, will there be enough to go around come 2100? Maybe, but only if we go all in right now on the renewable principles that will ensure a sustainable future. More solar panels and wind turbines, fewer oil derricks and coal plants. More rooftop gardens, less XL pipelines. More politicians willing to actually make an honest-to-goodness push for meaningful climate change legislation, fewer lawmakers who say they will, but probably don't really mean it. And, yes, that includes the current occupant of 1600 Pennsylvania Avenue. And so, on Earth Day 2013, ask yourself one question: What are you doing—or, more aptly, what should you be doing—to ensure that the only planet we're ever likely to call home will be inhabitable for your children and their children?
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