Now that I've got your attention, I want to ask: how much energy do we waste by burning leaves? In my little town, I've watched leaf blowers push leaves off of streets and out of parking lots. The blowers burn gasoline of course. Why is it necessary to waste gas to tidy nature up in this way? We have laws limiting the use of water on lawns; why not limit the use of leaf blowers to actual necessity? Many leaves decompose just fine when left on their own.
Full Disclosure: I HATE it when somebody turns on a leaf blower, while I'm trying to record my novel.