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United Airlines passengers to see targeted ads on seat-back screens
(www.cbsnews.com)
This is a most excellent place for technology news and articles.
I don't know about prostate cancer, but I do know that apperently I waited too long to check for colon cancer. Just spent a year recovering, and I'm only 40. It was probably there already for a number of years.
So, start getting screened when you're 5 years old, I guess.....