Yeah, but all these North American mammals are due to loss of habitat and the fish due to overfishing and we aren't even close to being the most dense population center. If our American species are already stretched to this point they will soon be stretched even further. Those extictions probably weren't man made. Maybe a few major food sources like the mammoth but that's even in debate now. I'm not worried about global warming. It's bs. It's natural. It might be happening but we didn't do it so nothing we can do. I'm concerned with overpopulation(eat too many fish- hurts fish and mammals) and loss of wildlife habbitat when we are already barely able to support the species we have. I also don't like the trash on the beach.
