The world has the technology - either available or well advanced in the research pipeline - to feed on a sustainable basis a population of 10 billion people.

别和你不爱的人结伴出游。

科学不仅仅是事实的集合；它是一种思维方式，一种以对人类易错性的深刻理解来怀疑地审视宇宙的方式。