This year, Rachel Carson would have turned 100. Had she lived, the "mother of the environmental movement" might have been pleased with how popular environmental causes have become. On the other hand, she might not have liked current shades of green. Don't lose sight of the forest. Photo: iStockphoto The great lesson of Silent Spring, Carson's brilliant critique of the pesticide industry, is that technology requires wisdom more than faith. In recent years, however, discussion about global warming has focused almost exclusively on high-tech hopes, as President Bush's much-repeated remarks from last year's State of the Union address make clear: …