RFK Jr.

Presidential candidate Robert F. Kennedy Jr. spoke about a time when, as he put it, "A worm ... got into my brain and ate a portion of it and then died." Here's a global perspective on these worms.

The Kennedys have been critical of Robert F. Kennedy's third-party run, which has the potential to draw votes away from President Biden — who the family endorsed Thursday.

Kennedy, an anti-vaccine conspiracy theorist, had been mounting a longshot challenge to President Biden for the Democratic nomination.