This appropriately slim volume explains why seven simple things, and the thinking behind their use, would/could save the planet. They are: the public library (sharing rather than purchasing and consuming), the bicycle (not just less fossil fuels, but also health and community) pad thai (eating lower on the food chain), the clothesline (why pay for what nature will do for free?), the ladybug (ditto, plus getting toxins out of our yards), the ceiling fan(um, okay, that didn't make much of an impression I guess) and the condom (because if we all shrink our carbon footprints while simultaneously doubling world population, all that work is for naught. Plus, y'know, AIDS and all.).