How much do we know about Jupiter?

How much do we know about Earth?
I would say we know more about earth...
I don't know if climate change is manmade or not... I look at earths and think... why not? Humans have totally transformed the planet.... from vegetation, river paths, whole eco-systems have been destroyed or created... So why should it be impossible to change how things work on our tiny planet and the 15-30km atmosphere we have...


NOW:
People never answer me when I ask the big question:
"What's so bad about fighting Global Climate change? If it exists we may save the our civilization from extreme consequenses - if it doesn't we still got more energy efficiency and oil independent in the process"

BTW: The whole thing creates a shitload of local jobs at least here

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