John Bachar said rock climbing felt like being on another planet.

VOA: special.2009.12.09

In 2001:A Space Odyssey, we get some kind of indication that there's life on another planet.

太空漫游,一些迹象表明,另一个星球上有生命存在

耶鲁公开课 - 死亡课程节选

"The bulk of our food production on this planet is dependent to some extent or another on oil or products of oil, so this goes right to the heart of,frankly, the way our society functions,"

VOA: standard.2009.10.20