Also in today’s Twitter Buzz: Two “Real Housewives of Beverly Hills” fight, a look at Jonah Hill’s new movie, Tracy Morgan sends updates about his Sundance hospital trip, comedian Joe Mande trolls Paula Deen, Dave Grohl and LL Cool J pose with an oversized Grammy award, and whoa, since when can Paris Jackson drive a car?
- It's time: Hillary Clinton and Donald Trump will face off tonight at 9 p.m. ET in the first of three US presidential debates.
- Inside the final days of the FARC, Colombia's 50-year-old rebel group, which is on the verge of signing a peace treaty with the government.
- Golf legend Arnold Palmer has died at 87. Known as "The King," his unusual style and charisma changed the game.