Medical tourism can be considered a kind of import: instead of the product coming to the consumer, as it does with cars or sneakers, the consumer is going to the product.

Self-dealing, essentially, occurs when managers run companies to line their own pockets instead of those of the companies' owners. It's been a perennial problem in American capitalism and became a real dilemma when America moved toward a model in which corporations would be run by professional managers who had only small ownership stakes.

Standards wars involve lots of variables, and understanding them often seems more an art than a science. They generally involve just two big players, and end in a winner-take-all situation.

You might say that economic history is the history of people learning to manage risk.

At the start of my career, I fought to prevent offshore drilling along the Atlantic Coast.

I was on the wheelchair for six months and lost all hope of returning to the field. I thought my career was over, but my brother kept on encouraging me. 'All that you need to do is to be resolute to return to the field,' he said. These words turned out to be magical.

Americans were outraged by Russia's interference in our presidential election, but a wider threat is Russia's doctrine of hybrid warfare, which includes cybersabotage of critical American infrastructure from nuclear plants to electrical grids.

My hands. I'm constantly working on my hands. I'm constantly working on my ground game and constantly trying not to get satisfied with where I'm at with my career and where I'm at as an athlete. I'm somewhat happy, but never satisfied.