I would say very slim, I don't believe in GW or GC, it's a cycle, my belief though, is we will hit an ice age/ or the winters will be colder breaking older record lows around the globe sooner or later.
2040's or earlier I think.
Not gonna happen.....we are in more danger from a rouge asteroid than global warming, climate change or whatever is the term of the day. The earth has an amazing ability to heal itself and we are a pittance of a speck compared to what is put into the environment by the earth itself and the effects of the sun.
it is much more likely that we will be struck by a 12 mile wide asteroid. The ~12 mile asteroid is about a 4 per billion year event. That makes it about the same odds as winning the super lottery with one ticket.