I call BS…show me some evidence ( not a weak climate model) that we are at a ‘tipping point’. Scaremongering I say….oh no…things might not look so bad…but wait what if we are at the tipping point where once reached we can never go back….never go back…..well where is your evidence for a tipping point ?
Sorry, but not everything we do is without dues.
The fact that arctic ice is retreating, is severely thinned, and that open water has a lower albedo really makes it clear that the process of melting arctic ice is a positive feedback system when it goes too far. The fact that for the first time ever, the entire surface of the greenland ice sheet was shown to be melting (yes, slowly, but it’s the first time even for that) shows another potential problem.
Of course, if you look at the temperature history of the earth, it’s gone through tropical phases, iceball phases, and so on, and this kind of ancient history makes it clear that unremediable change can happen, has happened, and will happen again.
So, then, given the actual physical evidence, which is now legion, only a tiny bit of which I have pointed out here, how can you possibly have avoided the evidence?