Is There Life on Other Planets? First, Look For Evidence of Refrigerators

Could Freon in the atmosphere of a distant planet be the thing that finally confirms humankind is not alone?

For decades, if not centuries, stargazers of every stripe have wondered how we could possibly spot intelligent life elsewhere in the universe.

After all, it’s not easy to see the telltale signs of a technological civilization from cosmic distances.

Until very recently, this was a speculative question, mostly entertained by astronomers over drinks, or in their spare time after other more “serious” research was complete.

But in the wake of the exoplanet revolution, this research has gone…

Source: Is There Life on Other Planets? First, Look For Evidence of Refrigerators – The Atlantic