Linda Diehl

As every day of Donald Trump's presidential campaign seemingly generates new headlines, this two-hour special examines the increasingly polarizing candidate's past. Included is rarely seen footage from Trump's interviews with Phil Donahue and his comments about politics from the floor of the 1988 Republican convention. Additionally, celebrities, politicians, and people described as "close to The Donald" weigh in, including former US Senator Al D'Amato (R-N.Y.), former Atlantic City mayor Jim Whelen, boxer Mike Tyson, and notorious "Apprentice" contestant Omarosa.

Rachel Maddow takes a special look at the Oklahoma City bombing by offering a first look at a taped confession by Timothy McVeigh that was made shortly before his execution.

A look at the World Trade Center towers from an engineering perspective. Explanations about why the Twin Towers were constructed the way they were, and how those design choices contributed to their inevitable collapse on 11 September 2001.