No thanks to glowing plants Omri Amirav-Drory is a menace to dark skies (“A glowing green thumb,” SN: 8/24/13, p. 32). Although way too few cities or towns use them, full-cutoff street lights — which project light only downward, where it’s needed — do exist.
Log in
Subscribers, enter your e-mail address for full access to the Science News archives and digital editions.