If you ask me about climate change, I'll tell you its getting colder. The winters are colder and snowier, and the summers are much cooler than what I remember 10-15 years ago around here. Its rare that we hit the 90's in summer here now, and that used to be common. So I don't get the global "warming" part.
As far as alternative energy... going green generally saves you money either way you slice it. Some stuff is going back to old ways like having a garden and/or canning, some of it is common sense like sealing up your windows and doors, and some is investing in alternative energy really isn't a bad idea... as an end user. If I had the land and the money, I'd be more than happy to put up a windmill. I wouldn't mind solar panels either, but at $5,000 for a 2'X4' panel that produces maybe 280 watts, its not really cost effective with their 25-30 year shelf life, whereas a windmill is.