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As Congress and the incoming Obama administration plan the nation's next major investments in green energy, they need to take a hard, clear-eyed look at Department of Energy data documenting corn-based ethanol's stranglehold on federal renewable energy tax credits and subsidies. Solar, wind and other renewable energy sources have struggled to gain significant market share with modest federal

Compact fluorescent light (CFL) bulbs uses 75 percent less energy than its incandescent counterpart, lasts up to 10 times longer than an incandescent bulb. But all CFL bulbs aren't equal. Some have lower mercury content than others, and some last much longer. Unfortunately, you can't tell the best of the best by their labels - or the U.S. government Energy Star logo. Some Energy Star labelled

Fish is loaded with valuable nutrients, including protein, iron, omega-3 fatty acids, which reduce harmful cholesterol, lower blood pressure and prevent blood clots, and selenium, a trace mineral that helps the body prevent cellular damage. But some ocean-dwelling fish also contain high levels of mercury, a powerful neurotoxin that is especially dangerous to the fetus and infants.