These days, it’s fairly easy being at least a lighter shade of “green” – you can buy and eat mostly local and organic foods, carefully plan your shopping outings to minimize driving around, and buy only the greenest household products – but is that enough? If you want to go Full Monty (Python), throwing yourself tempestuously at the goal of having zero net eco-impact, as Colin Bevan, AKA, “No Impact Man” did, it could take you way outside your comfort zone. &n