Let's build a beacon to tell aliens who we were

Let's build a beacon to tell aliens who we were - opinion - 02 December 2011 - New Scientist: "Somewhere in the cosmos, 36 light years away from us in the direction of the Hercules constellation, a series of electromagnetic waves stretching across 30 million miles of space carries a message from Earth. Each of the 1,679 signals it contains falls in one of two frequencies – an FM signal that translates to a bunch of ones and zeroes."