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引言甲型H1N1流感疫情将如何发展?甲型H5N1流感(禽流感)是否最终会演化为人与人之间大范围的传播?气候变化将如何影响我们的生活?在可以预见的将来,是否会发生小行星撞击地球的灾难?人类似乎陷入了一种困境:虽然我们感受到了威胁,却发现已有的知识是如此匮乏,以至于无法确定问题的范围,更没有足够的确信去实施某种干预措施。“每当威胁变得更加紧迫和明显时,我们却发现自
INTRODUCTION How will the H1N1 influenza outbreak develop? Will the H5N1 influenza (bird flu) eventually evolve into a wide spread between people? How will climate change affect our lives? Will it happen in the foreseeable future? Asteroid Crashes Hit the Earth? It seems that human beings are in a dilemma: although we feel the threat, we find that the existing knowledge is so scarce that we can not determine the scope of the problem, and we are not convinced enough to carry out some kind of intervention . ”Whenever threats become more pressing and obvious, we find ourselves