Not followed this thread, but the simple plain fact is that there are PLENTY of periods in the Earth's history where it's been much, much warmer than this. That is not an opinion, it's simple fact. And last time I checked, polar bears still exist. i.e. they are not extinct.
The world is probably warming (actually global average temperatures did stop rising after about 1998 IIRC to just recently, so even that is not certain). But if it is, the extent to which this "calamity" is over-hyped is simply ridiculous. I cannot turn the BBC on without hearing some pillock who knows fuck all about it, blaming god knows what on "climate change". I missed the bus last week, due to climate change. My Mum left her purse in Sainsbury's due to climate change. It's ridiculous.
We have this thing called "weather" - you may have head of it. It's a funny old thing, but we get different temperatures and different amounts of snow and rain etc from one day to the next. One week to the next. One year to the next. Different weather.
Did you ever wonder why "Vine Street" is on the Monopoly board? Because we used to grow vines there and England was a big producer of wine in the warmer temperatures back then. By the time King Henry VIIIth ascended the throne there were 139 sizeable vineyards in England and Wales - 11 of them owned by the Crown, 67 by noble families and 52 by the church.