Backpacking… Stove? Light? Both?
This is either brilliant or totally stupid, and it is amazing how often you can’t tell which one of those is right.
Aside from all the save the earth crap, because even if one were to accept that human activity is the sole destroyer of the world and/or that we can or could do anything about it, all most people really care about is not having to buy batteries and/or not having their cell phone shit the bed.