For Earth Day, a pointer to a decent article in Wikipedia about alternatives to fossil fuel. More clearly than ever, we see that there are ample sources of energy available to us - from sun, wind, water, algae, vanadium reflux batteries, hydrogen fuel cells and more. If we choose to pollute with a finite, increasingly expensive resource that has limitless political and economic implications, let's at least be clear that this is now a choice, and no longer a matter of necessity.
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