He believes that the few nature areas in Singapore should be kept for our children and has been campaigning for the preservation of Chek Jawa. 他向来大力呼吁保留仄爪哇湾，认为我们应该为后代保留所剩无几的自然生态区。
Northern North America is part of a larger circumpolar ecological domain that continues across the narrow Bering Stait into Siberia and northern Europe. 北美北部是极地生态区的一部分，极地生态区一直向外延伸，穿过白令海峡，进入西伯利亚和北欧。
