Sir Martin Rees, the president of the Royal Society and a professor of cosmology and astrophysics, added: "Nuclear weapons still pose the most catastrophic and immediate threat to humanity, but climate change and emerging technologies in the life sciences also have the potential to end civilisation as we know it."
N.B.: The Blogger is an R.E.M. fan but does not know all of the lyrics to their doomsday song, "It's The End Of The World As We Know It (And I Feel Fine).
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