Economy Apr 21

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Can a tax help cut down greenhouse gas pollution?

Is making pollution expensive the best way to combat climate change? Economist Yoram Bauman thinks so -- he’s spearheading a campaign for a carbon tax in Seattle. But the proposal is raising opposition, and has brought together some unlikely bedfellows…

Move over solar and wind power, there’s another renewable energy source: poop. Thanks to rapidly advancing “digester” technologies, it’s possible to extract and refine natural gas from the methane in human and animal waste, generating power rather than polluting greenhouse…

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