It's kind of a mixture. Weather is weather, like some people have said, but we can in fact trap heat when we abuse our greenhouse gas content by burning too many fossil fuels. IMO, nothing screams "hotter planet!" faster than heat-trapping gases. But how much it's exactly going to affect anything, we don't know yet. It could mean nothing, or it could mean a lot one day. So even if you don't think global warming is an issue, the environment itself will always be a big one. Might as well keep an eye on it now and turn off your extra lights lest we turn around 40 years later wondering where we went wrong. :p
JD
ETA: Not sure if Nan was specifically replying to me, but I'm just saying don't abuse the greenhouse. I'm not at all saying cut out CO2.
