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Its refreshing to see the Senate Environment and Public Works Committee moving on from a debate over whether global warming is a hoax, to one of what to do about ever-increasing US greenhouse gas emissions.

Today the hearing was on the subject of “Emerging Technologies and Practices for Reducing Greenhouse Gas Emissions.”

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Politicians, business leaders and economists have joined environmentalists in calling for new laws to restrict greenhouse gases. The US administration has thus far rejected these efforts, but momentum for change has been building since the February 2 release of a report by the Intergovernmental Panel on Climate Change that called global warming "unequivocal" and said with 90 percent probability that human activities help cause it.