The most ancient ? and easily the most controversial ? evidence of life on the blue planet turned up seven years ago on a tiny nubbin of land at the southwest corner of greenland ' s cold and barren island of akilia 地球这个蓝色星球上，最古老的（可以想见也是最具争议性的）生命证据在七年前发掘出来，来自格陵兰西南角叫做阿基利亚的一小片土地。
