I recently watched the video GasHoax:
This video debunks some of the claims made in anti-fracking videos that flaming water supplies in the northeast are a new thing that was caused by fracking. This video notes that people have been able to do that for ages.
I find this interesting because I can take you to a spot in a public park in upstate New York where you can light a creek on fire. Heck, I did it about a hundred times as a boy. There was even an old tire rim there with which you could corral the flames; put a pot on that and you could boil water. I’ve even put live crawfish in there, boiled them, and eaten them.