Since an asteroid collision could, like global climate change, affect all of humanity, should not everyone have some say in the decision? Perhaps every country should vote in the UN General Assembly on how to proceed; the option receiving the most votes – with a possible mandatory minimum requirement, such as requiring an alternative to win a majority or some higher number of votes – would prevail.
既然小行星撞击威胁同全球气候变化一样，是事关全人类命运的大事，那么是不是人人都有参与决策的权利呢？也许应该让所有国家在联合国大会上投票，得票最多的方案就得到采纳 —— 可以设定最低门槛，比如简单多数原则或更严格的要求。另外一种办法是让全世界的成年人参加一场全球公投，选择他 / 她所支持的方案。