Potent sleuths

Potent sleuths Nowadays, Taiwan's forest-covered mountains can hardly be seen through the island's increasingly foetid yellow smog. 50 years of overdrive industrialisation has left the country with such rampant pollution problems that experts, reacting to a recent environmental survey, said that it would take another half century just to clean up. Of course, such a timeframe would only be feasible if future pollution levels dropped dramatically