"and there are abundant hypersaline and hyperacid pools, with pH values that are even negative."
One of those wrong things you learn... pH value of 1 is as acid as it gets.
@sda Ph only goes from 1 to 14 under normal conditions of temperature and pressure. (25º and 1atm).
The statement is not wrong, it's just meaningless if you don't inform under which conditions it was measured.
