Things You Should Know, with John Matthews: Humboldt County DA’s Office is warning of an email scam targeting the clients of local attorneys. California authorities say they tracked a package containing 2.5 pounds of marijuana to the home of a Cincinnati Bengals player in suburban northern Kentucky. A pillar of physics — that nothing can go faster than the speed of light — appears to be smashed by a subatomic particle that has made a giant end run around Albert Einstein’s theories.