If charcoal is a natural water purifier,why stop natural forest fires? bad gases go up into the air,get rained down,charcoal cleans the water,makes cleaner water for fish, animals,ocean gets cleaner water,and the water would be colder because of a more open canopy,the forest and brush is so thick right now we would have to be smart on how the fires were controlled.also the forest is so thick in vegitation it consumes alot of water.if the canopy was more open the water gets 10 degrees + cooler. but im not talking of clear cutting, just a smarter manegment.