Why Do We Want to Find Aliens?
Humanity’s Fascination with ‘Little Green Men’ Dares Us to Imagine What’s Out There
The most memorable taxi ride of my life occurred when I stepped into a cab driven by a man named John, back in 2016. We fell into a conversation about our lines of work. He told me how much he enjoyed his job. As a taxi driver, he got to meet the wonderful menagerie of humankind and find out their life stories—and be paid to do it, no less. And I described my day as a working astrobiologist: how I try to use instruments to detect the signs of living …