BTW, all those talks appear to be on youtube.
If you are interested in the cancer / food link this is interesting:
http://www.youtube.com/watch?v=1bXowWzpi-Y - Dr William Li - Angiogenesis Foundation: 2010 TEDTalk Update
Hard cheeses are started with bacteria that produces vitamin k2 which fighting cancer with as little as two slices a day.
Papaya, Shrimp, chocolate, reduces cancer risk.
His original talk is
http://www.ted.com/talks/william_li.html - William Li: Can we eat to starve cancer? The food list:
http://blog.ted.com/2010/02/10/dr_william_lis/.