Last seen in:
- L.A. Times Daily - Apr 8 2019
- The Washington Post - Apr 8 2019
- L.A. Times Daily - Jun 13 2018
- The Washington Post - Jun 13 2018
- L.A. Times Daily - Nov 20 2017
- The Washington Post - Nov 20 2017
- The Washington Post - Nov 11 2016
- L.A. Times Daily - Sep 7 2016
- USA Today - Jun 22 2016
- L.A. Times Daily - Nov 13 2013
Related Clues:
- Prefix with modulator
- Prefix with sphere or disaster
- Earth-friendly prefix
- Prefix with science
- Prefix with sphere or system
- Green, in a way
- Prefix with thermal
- Prefix with transmitter
- Environmentalist's prefix
- 'Foucault's Pendulum' author
- ___-friendly
- Prefix with -pathy
- Nonpolluting
- Author Umberto
- See 36-Across