where did i learn this from?
1) studied enviro sciences in undergrad
2) spent 5 years working on environmental topics, kyoto and climate change chief among them
3) reading scientific publications
of the few topics that i'm comfy getting on a soap box about, this is one of them. if i thought i was worth it, if i thought it would convince you, i'd be happy to provide you with bibliographical references. but i fear it's not worth any effort.
surly, here's your cue to make fun of my education and experience (i.e. deflect the debate). in the meantime, i'm going home and will shut up for a while... you've got me all riled up
p.s. migratory patterns are well-studied. we can figure out how far polar bears would have to move to find open ice at current rates of retreat vs how fast/far they actually can go. this is the exact reason why they're being declared endangered - it's called scientific prediction (aka reading the writing on the wall).