toxic substances have been found in the air downwind from Toronto, Canada's capital. These were most likely released by the dumping of polyvinyl chloride ( pvc ), say environmental
There were 2,000 vultures in Bharatpur s Keoladeo National Park during the 1980s. In 1998 experts could spot only four . Ornithologist Asad Rahmani fears that the vulture is disappearing throughout India. To find out the reason for this decline,