Tucker Carlson released the first episode of “Tucker on Twitter” Tuesday night, opening with a casual “hey, it’s Tucker Carlson” -snip- Carlson—who said that “in journalism, curiosity is the greatest crime”—cited a widely reported claim by an Air Force veteran that the U.S. government had recovered proof of UFOs, including an intact aircraft of “non-human origin.” Carlson said of the story that “UFOs are actually real” and “in a normal country this news would qualify as a bombshell—the story of the millennium.” Carlson noted that The New York Times had several stories on Ukraine, Donald Trump, trans people and climate...