Generation Y is more likely than older generations to support clean energy and environmental protection and to believe climate change is happening and is caused by human activity, according to new Pew polling and analysis. Generation X is close behind. Boomers aren't so bad either. It's the old folks, the so-called Silent Generation aged 66-83, that are the big problem. There's long been talk about how gay rights will continue to advance as homophobic old codgers die off. Looks like the push for a cleaner, greener society will get a boost from that same cohort replacement effect.