CNN Chief Medical Correspondent Dr. Sanjay Gupta explains the causes and symptoms of chronic traumatic encephalopathy, more commonly known as CTE.

NAVYA's taking self-driving seriously— its latest autonomous taxi doesn't even have a drivers seat.

Natisha Lance gives an update on the trial of Justin Ross Harris.

Two brothers who have helped rescue dozens of victims from the flood waters in Texas said they love seeing the unity that has come following Hurricane Harvey.

Undefeated boxer Floyd Mayweather tells CNN's Don Riddell that he is happy to play the bad guy in fights where he's the overwhelming favorite.

At a rally in Phoenix, President Donald Trump said that the media is trying to take away America's history and heritage.

Pastor A.R. Bernard is the first to resign from President Donald Trump's Evangelical Advisory Board, saying he saw no consistency from leadership.

President Trump, during an address at the 2017 National Boy Scout Jamboree, says that more loyalty is needed.

A police chief in North Carolina runs a unique and impactful program that helps opioid addicts beat their addiction. CNN's Kaylee Hartung has the story.

Speaking on a panel moderated by CNN's Wolf Blitzer at the Aspen Security Forum, former Director of National Intelligence James Clapper says officials should block President Tru...