IFEZ, you can't possibly deny Climate Change can you? There's billions of years of Earths History where it has constantly changed, it's always changing! The "Mini Ice Age" they're talking about drew my attention as well, but have a bit more of a read and they're saying that it simply means a small decline in temperature, not that the world is going to Ice over, it really is a poor name, but certainly a catchy headline. Experts suggest it will cause warming to slow down but not to reverse and it will only last maybe 20 years before going back to how it is now.
I don't like Al Gore, I hate the "Global Warming" hype, but there is definitely Climate Change, we are having an affect on it for sure, I personally believe the world is far more complicated that a lot of people choose to believe, it has many different processes that help balance it out when events happen such as too much carbon, so much of it we're only barely beginning to understand which is why I hate all the models that people put out which cannot possibly be correct as they're based only on what we currently understand which is so damned little!
In short, we do need to give businesses a good reason (A financial reason unfortunately) to convince them to reduce their impact, otherwise they won't, simple as that. Only way to really get businesses to do what is good for everyone else is to eat away at their bottom line in some way.
In a perfect world you should just be able to tell them "Hey, you're polluting the world, you should spend a little to help clean up after yourself..." but you can't, instead we have to go with the "Hey, you're polluting so we're going to tax you more, but if you take actions to reduce your impact we'll reduce the amount you'll be taxed by a greater amount than what you spent"