hot house earth trend would be propelled by strong bio geophysical feedback difficult to influence but human actions what does that mean that these trends will continue despite attempts to me we can still address this there is still a chance to avoid these kinds of feedback loops and tipping points the report talks about what the report says is. there are certain things that can happen and once they happen they reinforce themselves once we trigger this these tipping points these feedbacks global warming will just continue even if we don't emit anymore if the third permafrost thaws in siberia permanently frozen soil methane is released and that triggers mobile warming there's more thawing of the soil and he keeps going and that's what we have to avoid the report says the tipping point for that is probably somewhere between one and two degrees of global warming so if we can limit to well below two degrees to one point five degrees as we said in paris in the paris agreement we can still avoid this catastrophic scenario this is the