Here is another article that interviews and asks Inconvenient Truth star Former US President Al Gore about global warming and climate change that i found from Townhall.com. The most interesting question is:

4) Mars has also been experiencing global warming. Since man can't be a factor on that planet, doesn't it suggest that perhaps a factor other than man, i.e. the sun, is responsible for the warming on both planets?
Wow!

Read the entire article here.