disasters

Live from the shooting gallery: what price impact safety?

by Anders Sandberg
February 15, 2013

As I am writing this post, asteroid 2012 DA14 is sweeping past Earth, inside the synchronous orbit (in fact, I am watching it on live webcast). Earlier today, an unrelated impactor disintegrated above Chelyabinsk, producing some dramatic footage and some injuries from shattered glass due to the sonic boom. It might have been the largest impactor over the last century, clocking in at hundreds of kilotons. It is no wonder people are petitioning the White House to mount a vigorous planetary defense against asteroids and comets. But what is the rational and ethical level of defense we need against astronomical threats?

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Fellow-Citizens, Foreigners, and Statistical Lives

by Roger Crisp
September 20, 2011

Like many in the UK, I was gripped last week by the reports from Wales about the search for four trapped miners, and saddened to hear of their deaths. Readers outside the UK perhaps heard nothing, or very little, about this story, thought it dominated the news here. One important reason for that, of course,… Read More »Fellow-Citizens, Foreigners, and Statistical Lives