I know geopathology is supposed to be much wider, but I would like to ask just about this part: Is it possible that underground water or minerals cause cancer or prevent plants from growing? Before you dismiss it, remember science is driven by observations and experiments. It's not like religion that is driven by scripture that you just recite and trust to always be true. So please be sound in your method, please consider the observations: I met a farmer the other day, that liked to talk a lot about his work. One thing he said that was strange, was about a very small tree (40 cm tall) in the middle between much larger trees (2 metres tall) spaced 8 metres apart in a square grid . The farmer said: "This place I have planted like 15 times. Nothing grows here - there must be water underneath". That was surprising, one might expect water to be good for plants, if it is close enough. Maybe I'll get a picture next time I get there to show you this strange phenomenon. And we have to take the farmer's word that he planted that spot many times but nothing grew. So it might be something about that place, probably water, maybe minerals, but whatever it is, the observation is that trees do not grow there. What's for sure, e/m waves at low frequencies can be harmful to many living organisms, and cause cancer. But variations of the earth's magnetic field during magnetic storms are not very strong. Anyone know how much effect underground water might have on the variations of the earth's magnetic field? What other effect might be at work, causing living organisms bad health? This is well away from electrical wires by the way, kilometres away. And the mobile phone signal was weak at that place, so human-caused effects are ruled out.