The entrants in the 2009 Olympus BioScapes International Digital Imaging Competition provide fitting tribute to nearly 1,000 years of making the invisible visible. These 15 photos were our staff favorites from the "Honorable Mentions" winners, listed in alphabetical order by photographer.

> 15 Scientific American Staff Selected Honorable Mentions
> 10 Photo Contest Winners
> Beyond the Still: 6 Contest Winning Videos