You've ditched your Hummer, recycle with a vengeance, and read your Hemingway by candlelight. But what kind of shoes are you wearing? Brooks Running launched a shoe this week containing its new midsole, called BioMoGo, which degrades 50 times faster than a normal one. According to Brooks, a standard shoe can last 1000 years in landfill, while BioMoGo will be gone in just 20. Brooks estimates it will save 30 million pounds of landfill waste over a 20-year period.