Today, President Barack Obama opened the United Nations
climate change summit in New York City. The goal of this week's
meeting is a new global treaty aimed at getting developed countries
to cut their greenhouse gas emissions by 20 percent below the level
they emitted in 1990. But as Science Correspondent Ronald Bailey
reports, activists want the U.S. and other developed countries to
reduce greenhouse gas emissions by at least 40 per cent below 1990
levels. Leaving aside the possible impact of such dramatic cuts on
the economy, Bailey writes, is it even possible for Americans to
cut emissions enough to reach the goal in the next decade?
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