The first so-called “smart gun” that uses biometrics to unlock for shooting will hit the market at the end of the year. Biofire Technologies announced this month that it is taking pre-orders for its home defense gun that is intended to prevent unwanted access to children and criminals. This is eithe...

As China draws down dollar holdings and the yuan trumps the US greenback in Russia, more and more economists are asking if an inflection point has been reached. Count Nobel laureate Paul Krugman firmly in the “no” camp. “The dollar’s dominance isn’t under threat,” the New York Times columnist argues...