地球,是一颗无比幸运的星球。喷发运动着的火山,永不停歇的大气,循环奔流的海洋,还有不断消融和生成的冰川,这些控制着地球上生存环境的脉搏,地球曾一次次遭遇灾难,但这些维护地球的运动从不终止,生命和进化也从没被彻底中断。地球到现在已有45亿之久,而从智人到现在的人类却不过百万年。近百年来人类文明空前繁荣,人口急剧膨胀,地球则似乎像个老者不堪重负。时常可以听到这样的口号,保护地球。地球需要保护,还是人类需要保护自己? 下面一段摘自BBC地球c系列的结尾或许有些启示 Earth and life recovered, sometimes even benefited from this and from every other major catastrophe. Its this ability to deal with catastrophe, thats the truly thing about the earth. Our planet is really tough, and theres nothing to suggest that this is going to change anything soon. In the long run, earth can cope with anything we can throw at it. We can clear all the jungles but a jungle can re-grow over a few thousand years We can burn all earths fossil fuels, flooding the atmosphere with carbon dioxide, but even then it would take the planet only a million years or so for the atmosphere to recover. Even the animal we are wiping out may eventually be replaced by other equally rice in diversity, as the relentless work of evolution continues. So in changing this world, we are altering the environment that has allowed the human race to thrive. We could be creating conditions that threaten the long-term survival of our civilization. So, all this stuff about saving planet earth, well, thats not the problem. Planet earth doesnt need saving. Earth is a great survivor. Its not the planet we should be worrying about, its us