In light of what happened yesterday, this story is even more relevant now. It was written before the meteor event in Russia.Asteroid 2012 DA14 makes its closest approach at 2:24 p.m. EST/1924 GMT today. One wonders if yesterdayÂ’s meteor in Russia wasnÂ’t some parts of the asteroid fragmented in a deep space collision eons ago and in a similar trajectory hours ahead. It may also be simply coincidence. [UPDATE: NASA has issued a statement on this, see below.]While politicians, their activist friends, and pundits caterwaul over a few tenths of a degree change in the global temperature over the last...