1·If an impact is large enough, it can disturb the environment of the entire Earth and cause an ecological catastrophe.
如果（陨石撞击地球的）力度足够大，相撞会扰乱整个地球的环境，并引发一场生态灾难。
2·The lack of adequate maintenance and daily attention to such a majestic building is the cause of this catastrophe.
对如此宏伟的建筑缺乏足够的维护和日常关注是造成这场灾难的原因。
3·Maybe we need the humans around, because they're natural critters who could survive in situations where some catastrophe would cause technology to disappear.
我们或许需要置身于人类之中，因为他们是在技术消失的大灾难中有可能生还的自然生物。
4·And we've seen this powerful natural disaster cause even more catastrophe through its impact on nuclear reactors that bring peaceful energy to the people of Japan.
同时，我们也见证了强大的自然灾难，通过影响曾给日本人民带来和平能源的核反应堆，甚至引发了更大的灾难。
5·Although it would take a truly massive space storm to cause a catastrophe, it is becoming clear that even modest solar activity poses a threat in our technology-dependent world.
尽管可能遭遇大规模太空风暴造成的灾难，但是越来越清楚的是即使是最温和的太阳活动对我们这个依赖技术的世界造成威胁。
6·Geeezzz CO2 is less than 0.04% of the Atmosphere. That is why 32000 American Scientists believe that CO2 could never cause a global catastrophe.
这也是为什么32000名美国科学家相信二氧化碳永远不可能带来什么全球灾难。