Although, I've heard that scientists said that it isn't sure that the warming is caused by the pollution of the humans, I have to say that both is said about a future. That means you cannot say, it is right or wrong, but you have to say that it's probability is higher or lower. But, that means, as long as you can't be sure, if it is caused by us humans, you _must_ start counter-actions because of the big delay of the global results!

The other way round, as soon that get undeniable scientific results that this all is caused by humans, it is probably too late to start a correction at all.


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Matt mentioned a few of the polluters, let's add some others: _each_ human being makes fire with wood or similar things because of warming up food or heating the house, each cow and sheep emits methan which seems to be involved into this process, too.