Title: Displacement (The Longest Three-Week Day)
Creator: michelel72
Rating: Gen
Word Count/Length/Size: 23053
Creator's Summary: Another day, another "science conference" gone horribly wrong. For once, Dr. Rodney McKay gets help saving the world … but then Donna Noble remembers.
Characters/Pairings: Rodney McKay/Donna Noble
Warnings/Notes: none

Reasons for reccing: This is a fun Stargate Atlantis crossover and a good fix-it for Donna Noble's problems, and merges the two fandoms very well.

( Excerpt )

Link: https://archiveofourown.org/works/31946