MiaTurbo said:humans have had a big impact. We've cut the trees and covered a big part of the surface of the earth with asphault, conrete, and glass. The Earth does have cycles, but as you said, we seem to be helping speed things up.
More dis 0r mis information... We now have more forest land then ever before... period. The reason is because for the first time ever man has been able to control forest fires, which in the past has burned forests faster then they could grow. Want to talk about pollution and global warming how many forests burned in the past that are not burning today?