Decode mystery aircraft under the lake
Mysterious about an intact passenger plane located at the bottom of Lake Harriet in Minneapolis, the US finally got the answer.Drop 96 million plastic balls into the lake to combat drought
Los Angeles has recently released 96 million black plastic balls into city lakes to cope with drought.Fish stocking against water pollution in China
Officials of the two eastern provinces of China announced they would release 20 million algae-eating fish into one of the country's most beautiful lakes to clean up the water.