Saturday Night Science Debate

Do anthropogenic factors play a role in climate change? Some say no:

(CNN)– In a late night posting on her Twitter feed, Former Alaska Gov. Sarah Palin continued to blast climate change believers Friday, calling the talks in Copenhagen, Denmark a representation of man's "arrogance," for believing people have an impact on nature.

"Arrogant&Naive2say man overpwers nature," Palin tweeted.

"Earth saw clmate chnge4 ions;will cont 2 c chnges.R duty2responsbly devlop resorces4humankind/not pollute&destroy;but cant alter naturl chng," the former Republican vice presidential nominee wrote.

More reputable experts argue that history shows again and again how nature points out the folly of men: