Deadline: June 30, 2012
Prizes: $100, $50, $25
Entry fee: $5
Submit any work of fiction (short story, poetry, fable, graphic novel) that contains accurate scientific content and is suitable for a youth audience (grades 4-12).
Maximum length: 4000 words.  No minimum.

Link: http://www.sciencethrillers.com/2012/sci-with-fi-writing-contest-cash-prizes/