Facial detection technology is making it feasible to do real-time measurement and analysis of ads in the physical world and predict the products you will want to buy, based on who you are or what you look like.

FORBES: What do Jell-O, Kraft, and Adidas Have in Common? They All Want to Know Your Face

Eric: What can a person do to look at the market and do an analysis of whether their idea is going to be a feasible opportunity or not?

FORBES: Move up http://i.forbesimg.com t Move down

"Our initial analysis shows that the general problem of long-term planetary engineering is almost alarmingly feasible, " they say.

BBC: Blue Marble Nasa