I guess the science would lie in the soil samples pre industrial revolution vs post industry ice core in the north pole and south Pole could identify the start of the introduction of man made particles, even the existence of nuclear activity. But you would have to go to school, become a scientist, and use a microscope and fund traveling and find someone to believe your documented findings, and come to a conclusion that man entered man made particles into the environment during xxx time frame till present, and from there document the changes or additions to specific particles. And different areas experience climate change differently. For instance the farming community has degraded and eroded soil so bad they can't produce without the addition of frankin seeds and frankin chemicals. And over a foot of soil is missing from the land. Then you have the high tides, and increases in flooding or areal fire dangers. A shift in tornado Alley. Bizarre if you ask me... Is this aided by man, possibly, does that have to be a political notion, not in the slightest bit. If you see something that feels different from 20 years ago, and you have always been in one spot in your life then chang becomes easy to notice but if your not documenting it, their is no record of change happening.