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Seeing the Fluorescent Light

Thank you, TIME, for giving us solid reasons to be hopeful on the crucial energy issue [Jan. 12]. With incentives for energy efficiency, the economy would hum with millions of local projects requiring little or no government planning. Moreover, by choosing a relatively low-tech policy that the world could readily copy, we would at last become leaders in climate protection--and in rejecting the needless and dangerous expansion of nuclear power. Egan O'Connor, SAN FRANCISCO

Another underutilized energy-efficiency tip: for new construction, simply orienting buildings correctly and optimizing window locations can cut energy use by a quarter or...