Lets recap.
97% of climate scientists are sure with a high degree of confidence that recent climate change is directly caused and can only be explained by human activity. Nobody is claiming that climate didn't change before for natural reasons.
Any 'controversy' exists within the details of climate processes eg what is the precise role of El Nino, what is the precise role of cloud cover, what is the precise role of deep ocean warming and ocean acidification.
The Daily Mail has an agenda. We all know that. Right? This article is a classic example of cherry picking. Lets take 1 data point - in this case Artic ice cover (ignoring ice depth and ice age) - and lets take 1 year of data - 2012. Lets use 1 scientist - Judith Curry - whose views have been widely discredited to the point of embarassment by other climate scientists - and lets make a headline called GLOBAL COOLING CONTROVERSY. Pathetic.
If you want to side with the 3% of climate scientists who do not accept the mainstream viewpoint, then first you should explain why you are better qualified than the 97% to take such a position.
Or just be open about your anti-science ideology like the Daily Mail is - then at least the rest of know where we stand. Don't insult us by dressing it up as science -please.