Would you like to do the refer a friend quest together ? <| sep |> Best to watch his lectures online he normally sticks to roughly the same presentation . Sometimes he gives an estimated timeline for the NTHE event in other lectures he does not . He normally goes with simple addition , starting with the idea that our environment or habitat ceases to be survivable around 4 c from baseline . And animal and their habitat can ' t relocate , we can move individual creatures especially big ones but what about the jungleforestmarshland ecosystems they need to live . Then based on IPCC and or Prehistoric Climate change wiped out the dinosaurs over centuries with slower and lower than current CO 2 changes we can expect about 2 c rise plus a degree or two with emissions from the last couple of decades . If we reduce our emissions this can accelerate our climate change rise as the pollution acts as a shade e . g . post 911 no flying raised temperatures across the US 1 c . Then there is his ever longer list of feedback effects 30 , methane release , ice free North pole , dying Amazon jungle , forest fires to name a few . With each feedback loop adding a degree or so to the Earth ' s climates rising fever and it looks dire . The thing is if you read climate science articles in my case not the academic papers just the New Scientist , Scientific American articles often the scientists are amazed at how much faster things are changing than they expect . And if the climate scientists are saying themselves that their models are underpredicting the changes they are admitting that they are not as accurate as they would like them to be . There could be a silver lining to this if our Earth system has more climate flexibility and adaptability than we know , after all we are pushing the system far beyond anything it has experienced for millions of years it could still surprise us .