When is the right time to replace an old refrigerator? Is it more environmentally correct to buy beer in bottles or cans? For the last several years, Bob Schildgen, aka Mr. Green', has been answering real people's questions like these in his column in Sierra Magazine, the magazine of the Sierra Club. Now the editors of Sierra Magazine have distilled the best of 'Hey Mr. Green' into this enormously useful and entertaining compendium.'
