In pursuit of evidence that life arose on Earth more than once, scientists are searching for microbes that are radically different from all known organisms. Life of course is problematic to define. But the search for aliens hiding in plain sight is forcing us to broaden our ideas of what is biologically possible.
Are Aliens Among Us?
In pursuit of evidence that life arose on Earth more than once, scientists are searching for microbes that are radically different from all known organisms. Life of course is problematic to define. But the search for aliens hiding in plain sight is forcing us to broaden our ideas of what is biologically possible.