Talking about ‘little things’ (from little things, big things grow), may I suggest a couple reads (about glyphosate herbicide for now):

https://www.sciencemag.org/news/2018/09/common-weed-killer-believed-harmless-animals-may-be-harming-bees-worldwide

Herbicide harms plant-friendly bacteria

https://www.futurity.org/farmers-weeds-beneficial-bacteria-1556572/