Every process natural or not impacts nature. This is the main argument of people that do not believe in the impact of humans in the environment. The problem with this reslonse is that it is not the fact of the impact itself but the volume and frequency. Take for example the pacific garbage patch. At the beginning it was small but when nature is not capable of decomposing the plastic and we increase the rate of garbage on our ocean, then it becomes a problem. It becomes a problem of fish ingesting plastic and then impacting the rest of the food chain.
I put the pacific garbage patch because it is nondebatable of who is the source. With global warming there are still people questioning the impact of humans on the environment. We do impact it no doubt, there is no way to claim that our processes are totally self contained as per the first sentence of this answer.
Presentation Challenge: Science, Technology, and Innovation and the Tripl...
may be of interest. The presentation argues that science, technology, and innovation have become part of everyday life. However, there are instances where they encourage the use and abuse of natural resources. The questions it poses, and the answers it provides, concern: (i) How might science, technology, and innovation be harnessed for people, planet, and profit to deliver sustainable methods and minimize environmental harm? (ii) How might business lend a hand?