Meg Urry says loss of the planet-finding Kepler satellite would be huge for NASA, which is furiously trying to fix it--but one way or another, it's a matter of time before we find signs of life on other worlds Mon, 20 May 2013 11:22:21 EDT

Bruce Schneier says our government has lots of unneeded and ineffective security measures. Mon, 20 May 2013 16:06:40 EDT