There's a space in this to distinguish it from Radiolab the band. The Autocorrect system changes the most popular tracks, as far as I can tell because people have Suggested Corrections for those tracks.
So everyone should go through this list:
And go to each track page, click "Suggest a correction", and suggest it gets corrected to "Jad Abumrad & Robert Krulwich". Hopefully if we do this enough, they'll get automatically corrected.