Blog Heap of Links for the day 22 April 2014

The Citizens Commission on Benghazi, a self-selected group of former top military officers, CIA insiders and think-tankers, declared Tuesday in Washington that a seven-month review of the deadly 2012 terrorist attack has determined that it could have been prevented – if the U.S. hadn't been helping to arm al-Qaeda militias throughout Libya a year earlier.

Asteroids caused 26 nuclear-scale explosions in the Earth's atmosphere between 2000 and 2013, a new report reveals. … Some were more powerful – in one case, dozens of times stronger – than the atom bomb blast that destroyed Hiroshima in 1945 with an energy yield equivalent to 16 kilotons of TNT. … None of the asteroids were picked up or tracked in advance by any space- or Earth-based observatory….