close on the heels of the dengue, yellow fever is threatening to break out in India, according to the World Health Organization. The Aedes aegypti mosquito which spreads the dengue fever
China s major hydroelectric power station on the shores of one of Tibet s most sacred lakes not only threatens the fragile ecology of the lake but may drain most of the water away within 20 years
India's urban population has swelled from 62 million in 1951 to about 217 million four decades later. Its cities have distended, 23 of them with more than a million people in 1991. Work opportunities
A study conducted for the department of the environment in the UK shows that the introduction of catalytic converters has been accompanied by a sudden and unexpected rise in concentrations of