Despite over 60 crore visitors and countless holy dips during Mahakumbh, the Ganga remains completely germ-free. Its secret lies in 1,100 types of bacteriophages, which naturally purify the water by eliminating pollution and killing 50 times more germs than their number, even altering their RNA. Ganga is the world’s only freshwater river with such extraordinary self-purification power, reveals a study conducted by a leading scientist.