More than any scientific discovery in the past, these developments raise issues central to our understanding of human life and existence, posing new challenges both for policy makers and for society at large.
过去的任何科学发现都没有象这些发展一样，提出了与我们对人类生命和生存的了解相关的关键问题，并对决策者和整个社会提出了新的挑战。