Hello

I watched a talk show on television , yesterday night
Someone claimed that human beings are responsible for climatic changes on earth because of industrial pollution .
Someone else claimed that human impact is definitly negligible.
Glacial and tropical conditions are cyclic regardless of the human action
Although the former hypothesis was supported also by a nobel price for physics I was not convinced at all
It seems a nonsense to me that we can really change the the global ( not the local ones) enviromental conditions of our planet

Ecologists and "Greens" are a little bit exagerating in my opinion
What do you think ?