Synthetic biologists were tantalized by the idea of making mirror images of microbes. Then things got complicated.

This story was written by Stephen Ornes and narrated by Noa - newsoveraudio.com

Is fake grass a bad idea? The AstroTurf wars are far from over.

Welcome to MIT Technology Review Narrated, the home for the very best of our journalism in audio. Each week we will share one of our most ambitious stories, from print and online, narrated for us by real voice actors. Expect big themes, thought-provoking topics, and sharp analysis, all backed by our trusted reporting.