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Hong Kong Harbour Swim Resumes After 33 Years

Hundreds of swimmers took part Sunday in Hong Kong's iconic harbour race, which had been suspended for 33 years until water pollution could be cleaned up. Hong Kong has been engaged in a major effort to restore the beautiful port.

EPA Mandates Cleaner Diesel, Cleaner Truck Engines

New rules issued on Thursday by the US Environmental Protection Agency requires oil refineries to begin making ultra-low-sulfur diesel, "a fuel with 97 percent less sulfur than ordinary diesel," which will cut smog-forming emissions by 10 percent.

Britain's Rivers Are Cleanest in Decades

Britain's 2,300 urban rivers are the cleanest they've been in over two decades, according to a 21-year study that measured the presence of clean-river invertebrates - a yardstick for river health - which during the days of heavy industry and poor sewage treatment had declined considerably, but now appear to be making a comeback.