Magda Nazer
Hey, its great you've shared that :) I've been a speaker for the TEDxSofia Youth Conference and I've seen a lot of presentations but that one is either new or I have somehow missed it :) this one might be of some interest for you, too :) http://www.ted.com/talks/lang/en/martin_seligman_on_the_state_of_psychology.html :)