"Humanity is on the threshold of being able to detect signs of alien life on other worlds. By studying exoplanet atmospheres, we can look for gases like oxygen and methane that only coexist if replenished by life. But those gases come from simple life forms like microbes. What about advanced civilizations? Would they leave any detectable signs?"
- CFA Press Release: A New Approach to SETI: Targeting Alien Polluters
- NBC News: A Dirty Trick for SETI Hunters: Go After Alien Polluters
- Harvard Gazette: Targeting alien polluters
- Time Magazine