hover over and winch polar bears when they are balancing on a 2m piece of ice? Not you Mr Plank"
Don't worry about the Polar Bear, the Sabre Tooth Tiger went for the same reasons that the Polar Bear will irrespective of the ice cap.
Damn, those stats aren't good reading!
Perhaps not but there is a school of thought that specifies global warming first started when man started farming and chopping trees for wood. It makes no difference, there is little you or I can do about it - or the whole race within 10 lifetimes - that will change the course mother nature takes us. We certainly cannot reverse anything and nor do we have the knowledge or intellectual ability to grasp the whole issue in its entirety. So don't you fret just fly safely.
Best Wishes