Sounds like an episode of the flat earth society railing against the rounders....
If you think that they were arguing against each other, then you didn't bother to actually listen to what he had to say. Or maybe you don't want to bothered with facts. That's the issue with dogma and those who are dogmatic.
You are the very type of person they refer to, and left wingers can be as dogmatic as right wingers. They have hissyfits when someone dares to come up with something that doesn't fit the (their) narrative. It is the left wingers who usually resort to name calling and other childish invectives.
Corbyn reports that climate change has more to do with solar activity than anything else. Solar activity runs in cycles, and that correlates to sunspot activity. There is a well known 11 year sunspot cycle. There are longer cycles also. In the 8th century, they experienced global warming, so much so that the lack of North Atlantic ice allowed the Vikings to colonise Greenland and sail all the way to Newfoundland. Four centuries later, Greenland got too cold for agriculture, and the Viking presence then disappeared.... all due to climate change. Insect life produces more carbon dioxide than man made carbon emissions, not to mention volcanoes, geothermal activity, oceans, wetlands and the huge amounts of methane generated by livestock.
Climate change is very political. Climate scientists don't get the top jobs if they don't toe the current line. Corbyn doesn't have to cowtow to anybody, since he's self employed as a climatologist/forecaster. About 3 years ago, the UK Met forcasted a very wet summer, a consequence of global warming; it turned out that it was the hottest in recent memory. The reason was that the head of the UK Met, a political type, make it a policy that climatologists had to incorporate into their longer range forecasts the global warming factor. They were a laughing stock that year.
[h=1]
"Forecast failure: how the Met Office lost touch with reality[/h][h=2]
Ideology has corrupted a valuable British institution"[/h]
http://www.spectator.co.uk/2013/07/whats-wrong-with-the-met-office/