The 93-year-old former president was admitted to a Houston hospital for treatment just one day after the funeral of his wife, former first lady Barbara Bush.
Former special operations agent Paul Scharre helped create U.S. military guidelines on autonomous weapons. His new book Army of None, looks at the advances in technology, and the questions they raise.
Travis Reinking's guns were seized in Illinois, but he may have broken no laws by having those guns — including an AR-15 — when he moved to Tennessee late last year.
Police in Nashville, Tenn., said Monday afternoon that Travis Reinking was captured "moments ago" in a wooded area just miles from the Waffle House where he allegedly shot and killed four people.
Chicago police keep a massive database of residents with suspected gang ties, but ProPublica's Mike Dumke found significant errors and investigated the effects on Chicagoans who made the list.
In Nashville, authorities have arrested the gunman they say killed four people at a Waffle House on Sunday. The suspect had been known to law enforcement and questions are swirling about why he had access to guns.
The suspected shooter in the Nashville Waffle House attack legally surrendered his guns in a previous incident. Many states seize guns from people who pose a danger. But how did he get them back?
"I did that completely out of a selfish act," said James Shaw Jr. after disarming the gunman. "I was completely doing it just to save myself. Now, me doing that, I did save other people."