When I was a teenager all of the environmental activists swore pollution was bringing about a new ice age. Yeah, I'm kinda old, but I'm not *that* old. :o) I remember the first Earth Day & I remember the pictures of people wearing gas masks in some American city, LA, I think. Stories of ladies nylons melting from all of the pollution air were pretty memorable.
There are still some saying that's what's happening. Here's the top google about it that I got:
http://www.iceagenow.com/
I recently heard a couple of things. One, the sun is getting hotter. Not a lot hotter, but hotter. I tend to wonder how the heck we did that. Second, I heard that Mars is going through a bit of global warming. Must have something to do with those rockets we sent there or something, ya know? ;o)
"When I was a teenager all of the environmental activists swore pollution was bringing about a new ice age."
LOL I remember that! It was in the 60's and all college students talked the line. LOL