“Floatworlds” (Analog Dec 2006) — fact article — 5th place

“Pollution, Solutions, Elution, and Nanotechnology” (Analog Jan/Feb 2006) — fact article — 4th place

“The Fifth Biorevolution” (Analog Sep 2004) — fact article — 3rd place

“Diamond Ether, Nanotechnology--and Venus” (Analog Nov 1999) — fact article — 3rd place

“Planets X” (Analog May 1999) — fact article — winner (tie)

“Unresources” (Analog Sep 1999) — fact article — 2nd place

“Near-Term Nanotechnology” (Analog Oct 1998) — fact article — 3rd place

“Just How 'Average' Is the Solar System?” (Analog Sep 1997) — fact article — 3rd place

“Population and the Future” (by Thomas A. Easton & SLG) (Analog Jan 1996) — fact article — 3rd place

“Chicxulub: The Smoking K-T Gun?” (Analog Mar 1992) — fact article — 3rd place

“Fire, Brimstone--and Maybe Life?” (Analog Jul 1990) — fact article — 5th place

“On Building an Earth-like Planet” (Analog Jul 1989) — fact article — 3rd place

“The Postdiluvian World” (Analog Nov 1985) — fact article — 2nd place