Skip the postholiday letdown with a slew of new books. Start with Forecast (Henry Holt and Co.) by Stephan Faris--an account of climate-change impacts on cultures, politics, and economies worldwide. For a pick-me-up, turn to The Essential Green You by Deirdre Imus (Simon & Schuster), which includes shopping lists, recipes, and explanations of product labels. Ready for more green lit? Check out Death by Leisure (Grove Press), in which author Chris Ayres infiltrates the Los Angeles "leisuretocracy" to examine (with no small amount of humor) how high-flying U.S. lifestyles have contributed to environmental and economic collapse.