This word of mouth (or email?) news on carbon nanotubes isn't directly related to space prizes, but it's on the Space Elevator Blog that covers the Space Elevator Games in such detail, it's relevant to the Tether Challenge, and it from the EuroSpaceward Space Elevator workshop to focus European teams on the (U.S. and possibly German) Space Elevator Games.
Update (morning November 14): There's more here.