Ponder instead Lazs.
There are and have been and will be climate changes. My concern (as well as most scientists that are NOT payed by an interest-related company such as Exxon) is that we are causing a climate change. Following are some points:
We already know from the law of physics how greenhouse effect works.
Then we know that we are causing very fast increase in greenhouse gas emissions, which is both uniquely fast and the amount has already been manifested.
It's only beginning, for we are going to be pumping fossil fuel into the atmosphere as long as we are still around and can find any.
To add to the effect, we are deforestating the globe at an enormous rate with the huge benefit of slightly cheaper lumber, burgers and coffee.
Then the fun starts. Some old paranoids have seen this coming and their predictions slowly come true.
We have debates over issues such as whether it's getting warmer or not, but when the predicted melting of the polar caps (not just an odd glacier here or there, but something MASSIVE) starts at record speed, we still have a debate about it.
When debaters are getting cornered in about established facts, such as that ancient ice melting means it's warmer than in ancient periods etc, one sees interesting ideas popping up. I see Volcanoes, underwater volcanoes, normal swings in temperatures told to be the cause, etc etc, as well as the final "It's not any warmer".
None the less, it is, and many people are afraid to look at it. So, who do I trust, - the ones that are looking at it and already fighting for measures dealing with it, - or an oil company who is paying for an opposite opinion since any countermeasuer will harm their budget?
Not a hard choice, - sorry.