Could the ‘Tape of Evolution’ Run Again on Alien Worlds?

  “Modern metabolism has a precursor, a template, that was non-biological,” says biochemist Greg Springsteen at Furman University. Rerun the tape of evolution, and DNA, RNA, ATP, the Krebs cycle — the rigmarole of Biology 101 — would probably arise again in distant worlds.” Biologist Charles Cockell at the The University of Edinburgh and author … Continue reading Could the ‘Tape of Evolution’ Run Again on Alien Worlds?