The alternative view to anthropogenic global warming (AGW) is represented in various sources linked on this page. (Sceptic: a person inclined to question or doubt accepted opinions.) There are various groups and individuals expressing a critique of the mainstream climate science. Here are some of them.
Sceptical climate science summarised in 12 minutes:
Do most scientists accept global warming theory? Sceptics say no. The global warmists claim that there was a “97% consensus” by scientists on the CO2 theory of global warming is explored by Andrew Montford in a booklet called Fraud, Bias and Public Relations: the 97% ‘consensus’ and its critics. http://www.thegwpf.org/content/uploads/2014/09/Warming-consensus-and-it-critics1.pdf
Climate and polar bears: are they facing extinction? The emotional appeal of the polar bears losing their habitat in the polar environment has provided some powerful global warming imagery, so we will also examine the views of a polar bear expert: http://polarbearscience.com/ http://www.thegwpf.org/content/uploads/2014/08/healthy-polarbears.pdf
Still not sure who to believe about climate change? OK: run your own climate model! http://www.climateprediction.net/ Is a climate modelling experiment using the home computers of thousands of volunteers. “This allows us to answer important and difficult questions about how climate change is affecting our world now and how it will affect our world in the future.”