Whether the wacky weather we've been having this winter is a result of global warming or just a natural cycle in Mother Nature's grand scheme of things, it's still a good idea to do as much as possible to support alternative energy sources and reduce carbon dioxide emissions (yes you can still breathe as much as you want wiseass). All I know is I can count on one hand the number of really cold days we've had in the NY/NJ area this late fall/winter. And even though it snowed for like 20 minutes today, it also hit 72 degrees just 5 days ago. 72 DEGREES. In JANUARY.
So if you have the means, support alternative energy. If your utilities company allows you the option of choosing to purchase electricity from alternative energy providers, do so. It doesn't cost that much more (I average less than $5 more per month). A good site to check out would be Green Mountain Energy.
Also visit TerraPass where you can learn how to reduce the amount of carbon dioxide you emit in daily life and purchase passes which go towards funding alternative energy sources. An interesting way to balance out your carbon footprint. Every little bit helps.