Ahead of the Olympic equestrian event this summer, the club has started converting its waste into organic fertilizer, all thanks to the help from the humble earthworm.

• 香港有名的赛马总会已经找到方法，赛马总会比今年夏天的奥运提前从事马术活动，而且已经开始把马粪转换成有机肥料，这都是因为蚯蚓的功劳。