Scientists have made amazing progress measuring the electrical fields of the brain, especially in recent decades.

Does medical science now know enough to be able to use that knowledge to change the brain's electrical state, so that patients with medical problems benefit?

When scientists discover a new type of drug that "promises" to become a "wonder" drug for all sorts of maladies, caution is a better route than joy and hope.

Concussions don’t have to knock a person out cold to cause brain damage. A couple of good tackles in a contact sport can cause damage that can affect a person’s ability to process emotions and information later in life. 

When it comes to playing sports like football and soccer, using your head may actually be the best way to lose it - or at least to lose a little bit of your cognitive power.