How much hotter is the planet going to get?

Found on New Scientist on Sunday, 09 March 2014
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The climate is highly sensitive to carbon dioxide, according to several new studies, which means that our greenhouse gas emissions will lead to strong warming. The finding suggests we need to cut emissions fast if we are to avoid dangerous climate change.

It looks like the earth begins to do what a human body would do: get a fever to fight an infection. Unfortunately, we are the infection. Seeing how well it works on the small scale, the future might not be good.