The transcript from the last Scientist Chat with EvdH has been posted here:
http://fold.it/portal/chats

You may also be aware of a problem with the recent CO2 fixation puzzles:
http://fold.it/portal/node/992321
http://fold.it/portal/node/992322

Because players were able to get very artificial score gains by mutating frozen sidechains, we will be manually rescoring both Puzzles 529 & 537 to only get credit for valid predictions. This will take some time, so we appreciate your patience.

Luckily the analysis of your results from these puzzles only examined your unfrozen solutions, but we apologize for this error.