Global warming always was a hoax. Back in 1975 Newsweek told us of the coming big freeze.
http://denisdutton.com/newsweek_coolingworld.pdf
They were right about the freeze. At any time we could start into the next ice age. If you look at my profile page you’ll see some graphs that indicate that.
Also, take a look at this article posted on IceAgeNow.
Sudden climate transitions during the Quaternary
http://iceagenow.info/2013/02/sudden-climate-transitions-quaternary/