First off, according to the definition of an ice age, we're still in one. Off the top of my head, it's defined as when the earth has polar ice caps.

Now, I agree that our recklessness with carbon emissions, etc., is having an affect on the earth, but I think it's far too premature to worry so soon - the difference they've made is too small to base any predictions on.

It's also worth pointing out that cow flatulence causes considerably more ozone problems than cars/industry. It's still our fault; after all, us humans decided to farm them to the levels that release all that methane into the atmosphere...

We *should* try to limit the polution emitted, but let's not get hung up on removing it altogether.