Last seen in:
- Newsday.com - Dec 8 2010
- New York Times - Nov 9 2010
- Wall Street Journal - Apr 23 2010 - April 23, 2010 - Presented in 3-D
- Thomas Joseph - King Feature Syndicate - Jun 11 2009
- Newsday.com - Sep 19 2008
- New York Times - Jun 24 2008
- L.A. Times Magazine - Oct 14 2007
- The A.V Club - Sep 26 2007
- Newsday.com - Jun 22 2007
- Newsday.com - Jun 1 2007
Related Clues:
- Sci. course
- Environmental sci.
- Park director's concern: Abbr.
- Sierra Club concern: Abbr.
- E.P.A. concern: Abbr.
- Branch of sci.
- Seismologist's field: Abbr.
- Environmentalist's maj.
- One of the phys. sciences
- Modern sci. course
- Bionomics: Abbr.
- Earth Day subj.
- Park ranger's study: Abbr.
- 'Silent Spring' subj.
- Rock field: Abbr.