"We're really very dependent on the public's assistance on things such as this, for them to be aware of people around them, to report things that are suspicious, to take a look at the pictures of these individuals who are missing and see if they recognize them, " Anderson said.

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Difficult images for all of us to look at, but these are some of the pictures of war and some of the doctors who repair the wounds of war.

CNN: Dr. Sanjay Gupta: Operating with the 'Devil Docs'

"We can look at the brain and take pictures of it, but ultimately we want to know how all these connections and wires fit together, " said neurobiologist Michael Bruchas at Washington University School of Medicine in St.

WSJ: Brain Science: Mysterious Neural Circuitry Becomes Viewable

Most of these pictures can be viewed for free without registration, but if you want to look at the big version of them you have to sign up for First Class membership.

BBC: Enviropedia website