Punjabi University Study flags heavy metal threat to birds in Harike Wetland

A Punjabi University study found heavy metal pollution in Harike Wetland is harming bird populations. Researchers said, "birds at Harike showed substantially higher bioaccumulation of heavy metals than those at Pong Wetland." Untreated sewage and industrial waste caused thinner eggshells and embryo deaths, prompting calls for urgent environmental action.