Chhath puja devotees have to stand waist-deep amid thick and toxic froth while offering their prayers every year. This thick white foam floats over the Yamuna river. This has become a normal event. People wonder what is the main cause of this white foam over Yamuna river? Why does it happen only at a specific time of the year?
We know that soapy water forms a layer of bubbles by trapping air and the same might happen in case of Yamuna river.
Rivers have twigs, dead decaying plants and...
