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From Nazi subs to megawatts: 125 years of wind power

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January 21, 2013 -- Updated 0230 GMT (1030 HKT)
Patricia Wu looks at efforts to combat food waste in Hong Kong.
January 14, 2013 -- Updated 0233 GMT (1033 HKT)
CNN's Pauline Chiou goes to Hong Kong's annual toy fair to find out about the growing market for eco-friendly toys.
December 31, 2012 -- Updated 0415 GMT (1215 HKT)
CNN's Liz Neisloss reports on a roof that is only a sample of the greening of Singapore's skyline.
December 19, 2012 -- Updated 0216 GMT (1016 HKT)
A dam project in Cambodia could destroy livelihoods and ecosystems, says Conservation International
December 18, 2012 -- Updated 0322 GMT (1122 HKT)
Shipping lines, port authorities and technology companies are taking the initiative to go green and reduce costs.
December 10, 2012 -- Updated 0206 GMT (1006 HKT)
Less than 20 miles from Singapore's skyscrapers is a completely different set of high-rise towers.
December 6, 2012 -- Updated 1104 GMT (1904 HKT)
The Pitcairn Islands might only have 55 human inhabitants, but the waters surrounding them are teeming with marine life.
December 3, 2012 -- Updated 0322 GMT (1122 HKT)
Biofuel made from sugar cane waste in Brazil could revolutionize the global energy industry.
November 26, 2012 -- Updated 0258 GMT (1058 HKT)
Many believe that fuel-cell cars will overtake electric vehicles in the near future.
November 19, 2012 -- Updated 0820 GMT (1620 HKT)
Modern and sustainable buildings in the UAE are taking cues from an ancient Arabic design tradition.
November 12, 2012 -- Updated 0409 GMT (1209 HKT)
One man's artistic vision is distracting divers from Cancun's threatened underwater ecosystem.
November 12, 2012 -- Updated 1746 GMT (0146 HKT)
Lake Victoria, Africa's largest lake, has been plagued by water hyacinth plants for over two decades.
A turtle on Australia's Great Barrier Reef
Just how much are natural wonders like the Great Barrier Reef worth in monetary terms?
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