Yes there's more ice in the south, and 150+ vessels stuck off Newfoundland this spring proves it to me. It engulfed them like a web. I predict that much ice again next year and for many years to come. Right off White Bay is iceberg alley where the Labrador Current runs by the Baie Verte peninsula. It's an amazing sight to see the ice move like a river down the west side of White Bay and run out the same time on the east side...two moving masses going in opposite directions 25km across. It defies logic when you look at it. If you're ever in Fleur de Lys ask for directions to Partridge Point If the ice is in the bay and the moon is full you got yourself a phenomenon.
As for humans being natural, of course we are. If we're unnatural then what the heck are we........MARTIANS? Hey, there's a thought....with Mars warming up maybe we call all go there. Drag along a couple giraffes, monkeys, chickens, you know...the two by two stuff....and start all over again....yeah right.
Seriously though, we are all of this earth. She's all we got mates. I'm still on the fence whether it's a man-made problem or a natural cycle though. Neither side has convinced me yet. I suspect it's a bit of both. It's natural in the fact that man is helping speed up the process but nature will fix it by eliminating enough of us so that we won't be adding to the problem anymore...if you follow my drift....ice drift that is.