My friend Michael mentioned a talk by Catherine Mohr in which she discusses how complex it is to judge the environmental costs of your actions (TED talk; video podcast on iTunes). Her specific concern is energy use, and she analyzes a few examples in frightening detail. It’s frightening because by the end, you might despair of ever getting these decisions right yourself.
Recommended viewing if you’ve ever asked yourself “exactly how far would I have to drive these batteries before I’d be better off tossing them in the trash?”
I know most of you have never asked yourself that question, but watch the talk anyway. It’s just 10 minutes.