Looking around the internet I saw there was lots of disagrement on the causes of Global warming. Views ranged from humans cause global warming, to we are not sure, to humans do not cause global warming at all (the sceptics). So I wanted to find out if Global warming is fact or fiction. So I went to YouTube and did a search. Watching a few of the videos made me even more confused about the issue, several of the videos gave figures e.g. 90% of global warming is caused by humans. So this made me think "To what extent do scientist believe climate change is caused by humans".