Be careful not to let emotion enter in to issues like this. And be especially careful before using terms like "scientifically obvious". Scary things lie at the end of that road:
http://www.crichton-official.com/essay-stateoffear-whypoliti...
http://www.crichton-official.com/essay-stateoffear-whypoliti...
Scary things lie at the end of that road if they are unsupported by the evidence. Unfortunately, all the evidence points to anthropogenic climate change.