Note this statement that subtely defends global warming. The sun's increase in energy output might be a factor in global warming but we don't have enough information that would show a hotter sun would mean a hotter Earth. CO2 emmissions from man is still the accepted rational for global warming, even though an anthropomorphic link hasn't been strongly established and assuming there is no change in solar output. The Greenies will hammer the uncertainties in studies like these, or will say global warming compounds the problem while ignoring the uncertainties of global warming. It is really about socialism and use of natural resources, not the environment.
Which is why we should call it what it is. The Church of the Environment and demand the Hysteric Left stick to their strict separation of Church and State dogma
I am willing to entertain the argument that the global climate is warming. Here in western Pennsylvania, the winters are substantially warmer and we have less snow than twenty years ago (and I am very aware of the dangers of generalizing experience at one location over a limited number of years to the entire world).
When I vacationed in Alaska several years ago, it was generally accepted that the glaciers on the Kenai Penisula were retreating. There's plenty of other evidence to support the argument (some of the evidence may be cherry-picked or otherwise questionable to be sure).
However, the Alaskan glaciers started retreating 100 years ago - long before anthropomorphic global warming would have any effect.
So, sure, the Earth's getting warmer and there's not a thing we can do about it.