This is maybe not so cool, more like really depressing, but interesting.
It is a long read, but worth it.
Astrobiology: Bolts from the blue | The Economist
"In a paper published on arXiv, an online repository, two astronomers, Tsvi Piran of the Hebrew University of Jerusalem and Raul Jimenez of the University of Barcelona, argue that some regions of the galaxy are less friendly to life than others. Moreover, the friendly areas may have been smaller in the past than they are now. If that is true, then it may be the case that complex life on Earth is just about as ancient as it is possible for complex life to be. And, since complexity necessarily precedes intelligence, that might mean human beings really are the first intelligent life forms to evolve in the Milky Way."