As a child Dr. Ben Carson fought for himself, as a doctor he fought for his patients, in politics he's now fighting for his presidential candidacy. Just a week before the next Republican presidential primary debate, Discovery Life unveils Ben Carson: The Lost Tapes on Tuesday, October 20 at 9/8c. The two-episode special puts the microscope on Dr. Ben Carson as he performs risky surgeries known throughout the world. Dr. Carson is in the limelight because he's a political hopeful, but prior to a career in politics, Dr. Carson was the go-to surgeon for pediatric brain surgery, completing up to 500 surgeries a year. Ben Carson: The Lost Tapes delves deep into the archives of some of the most noteworthy surgeries, including the first successful surgical separation of infant Zambian twins Luka and Joseph Banda, which made headlines throughout the world. He was the first-person to ever use a tool for brain tumor surgeries – a wand with special sensors at its tip – to surgically remove life-threatening brain tumors.