Searching for Pollution, Junk and Ruins of Technological Aliens
by Brian Wang from NextBigFuture.com on (#6CD0H)
Avi Loeb is looking for objects that have crashed into the Earth which based upon their speed and angle indicate they originated from outside the solar system. We have been unsuccessfully using SETI to detect communications from alien technological civilizations. However, we know that humanity has over 2 billion tons of garage every year and ...