Columbia anniversary on NPR weekend edition Sunday

http://www.npr.org/rundowns/rundown....rgDate=current

Broadcast on Feb. 1:

SPACE SHUTTLE COLUMBIA ANNIVERSARY

One year ago today, the Space Shuttle Columbia fell apart during re-entry
above the American Southeast, killing all seven aboard. Host Liane Hansen
speaks with William Langewiesche , National Correspondent for The Atlantic
Monthly, about his reporting into the changes NASA has and has not made
since then. (5:00)