In sharp contrast to his 2008 campaign, President Obama hasn't mentioned climate change on the campaign trail this time around, instead choosing to focus on the economic side of clean energy rather than the climate change side.
Republican presidential candidate Mitt Romney has accepted the scientific consensus that the planet is warming up. But he has not accepted another element of that consensus: that humans are largely responsible. His position is well-grounded in politics, but not so in logic.
Growing algae as a source of fuel could consume vast amounts of water and fertilizer, according to a study by the National Academy of Sciences. There's also a risk that the energy required to produce these fuels would make them impractical. These daunting technical problems need to be overcome if the nation wants to turn to algae fuels as a substitute for gasoline.
Hydraulic fracturing hasn't gone further than the discussion phase in Maryland, and Democratic lawmakers and environmentalists are adamant it stay that way until further studies into the practice are performed.
A Vermont college's decision to slaughter two oxen after one suffered an injury has sparked some serious debate. The college cited sustainability as one of its reasons, but some students and animal rights advocates say it's just not right to serve Bill and Lou for dinner.
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