Season 25 aired between 08 Jan 2013 and 12 Nov 2013, 8 episodes.
Episodes
E01
The Abolitionists: 1820s-1838
08 Jan 2013
E02
The Abolitionists: 1838-1854
15 Jan 2013
E03
The Abolitionists: 1854-Emancipation and Victory
22 Jan 2013
E04
Henry Ford
29 Jan 2013
E05
Silicon Valley
05 Feb 2013
E06
War of the Worlds
29 Oct 2013
E07
JFK (Part 1)
11 Nov 2013
E08
JFK (Part 2)
12 Nov 2013