The environment is the totality of our surroundings, a negative effect on any part would affect the entire system.
I'm somewhat in the middle on this whole argument. I hope those who claim our actions have zero effect on global weather are correct and we can go on with our selfish ways and those who disagree are wrong. The biggest problem with this is most in the climate sciences community believe that more than 200 years of fossil fuel burning, clear cutting/burning forests, dumping manufacturing waste into our waterways, poor farming practices, and other human activities have taken a toll on our planet and its weather patterns. Since this is their field of expertise I will respect their opinion but hope they are wrong.
Another way to go would be to have so much hatred for one man I would claim it is all one big leftwing conspiracy and discount anything that contradicts what I want to believe. I would also take the word of an Oklahoma Senator with a degree in economics over those with careers in climate science.
I think I'll just keep an open mind and realize I don't have the answer and hope those studying and working on the matter will discover the truth and then we will all know the answer.
By the way, and sorry to double post, I would like to know your source for the highlighted text above.

