A “near-natural” prosthetic arm, that took eight years to develop and test, has been approved for mass production by the US Food and Drug Administration. The DEKA Arm System has been affectionately dubbed “The Luke,” after Star Wars’ Luke Skywalker who received a robotic replacement for the hand he lost in a fight with Darth Vader in the 1980 film “The Empire Strikes Back.” One of the... 

In Washington, DC, talking about the Bill of Rights can land you in jail for 90 days. Our nation’s capital has a licensing scheme in place that makes it illegal for anyone to “guide or escort” anyone else for hire without first getting the government’s permission. To get the license, which the Washington Post editorial board labeled a Tour de farce, eager entrepreneurs must first pay hundreds...