* Wineries and Global Warming - The Napa and Sonoma microclimates produce world famous wines, but what happens if the climate changes? Scientists are predicting that global warming could increase the number of super-hot days in the California wine region, interfering with the way grapes ripen. Local scientists and wineries are beginning to look at how to prepare. * The Planet Hunters - Do other planets like Earth exist? To find out, a team of astronomers from the University of California is building a new telescope in the hills east of San Jose. Quest finds out how the team searches for planets and why it matters. * The Great Switch-Out - Compared to traditional incandescent light bulbs, new compact fluorescent bulbs use at least two-thirds less energy and last up to 10 times longer. Many say that widespread use would produce major energy savings and reduce global warming emissions. But some people say their lighting is too harsh. Quest sheds some light on the bulb battle.