Repealing Obamacare is bound to come up as voters in a town-hall forum question President Obama and Republican nominee Mitt Romney in the second presidential debate. Concerns about healthcare, from Medicare to the Affordable Care Act, play a key role in this election. Three writers give their brief take on whether the next Congress should repeal the Affordable Care Act.
'Energy scavenging' draws on a wide array of untapped energy sources – radio waves, vibrations created by moving objects, waste heat from computers or car exhaust systems — to generate electricity.
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