Maybe, it's possible. I love the cold so I wouldn't mind. Beats the extreme heat.
I think this question is similar to the first. The earth heats and cools for many reasons. What we are feeling right now is the result of global warming. Perhaps the extremes will reach a point that we will be boiling hot and suddenly freezing cold causing an ice age, but I don't think it will be any time soon. Plus side for me I've ran dog sleds so I can still get around lol.
Yes, but we would probably loose a lot of people because they cannot function without the internet lol. Food would be less, so we would need to adapt. Otherwise, I think we would survive. Maybe not everyone, but a good percentage would.