Have we reached the energy tipping point? - CNN.com

Have we reached the energy tipping point? - CNN.com: "Have we reached the energy tipping point?

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By Manav Tanneeru
CNN
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(CNN) -- In late June, the U.S. Senate passed an energy bill that would raise gas mileage standards for the first time in 20 years and fund research on alternative energy sources.
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High gas prices and low mileage are among the factors behind an apparent shift in the nation's energy debate.

The bill's proponents call it a breakthrough in the nation's energy debate, saying the focus is shifting from reliance on fossil fuels and foreign oil toward renewable fuels and green technology.

The measure comes amid another summer of high gas prices, state and local conservation efforts and a presidential campaign where voters and candidates say the issue is key.

So is a critical mass building among Americans and legislators for changes in U.S. energy policy? Or are these efforts simply blips on the radar as Americans continue to drive SUVs and"