Before and during the Arab Spring in 2011, Barnett anchored a weekday Middle East focused news hour from the network's production hub in Abu Dhabi, U.A.E.

CNN: About

Stanford University researchers have suggested that a lack of response to emotionally meaningful information in the insula, a brain region at the hub of the salience network, can lead to a cascade of effects that result in inappropriate emotional displays.

WSJ: When Social Skills Are a Warning

An exchange, he said, should not be seen in isolation but as the hub of a network that includes brokers, dealers and investors.

FORBES: Why the world would be better off with one big stock market.