Searching this term I found an article with an amusingly similar title: > Life on Earth... but not as we know it https://www.theguardian.com/science/2013/apr/

Searching this term I found an article with an amusingly similar title: > Life on Earth... but not as we know it https://www.theguardian.com/science/2013/apr/14/shadow-biosphere-alien-life-on-earth https://www.theguardian.com/science/2013/apr/14/shadow-biosp...