But when he felt the warm life under his fingers, he could not kill this beautiful thing.

VOA: special.2010.03.20

If you're a bacterium your whole life is about swimming to nutrients and running away from things that would kill you.

假如你是一个细菌,你的一生将会在追逐养分,和逃避敌害中度过

耶鲁公开课 - 生物医学工程探索课程节选

The researchers say their findings support the idea that a huge explosion or explosions caused fire and pressure powerful enough to kill off life on the Earth.

VOA: special.2009.01.20