John Muir convinces Teddy Roosevelt to preserve Yosemite, journalist Marjory Stoneman Douglas fights to protect the Everglades, and Native American activists occupy Alcatraz.
How teenage writer Mary Shelley created her legendary novel, "Frankenstein."
James Cook discovers Hawaii and parties with the natives; Daniel Inouye fights in World War II.
Orson Welles's Citizen Kane upsets William Randolph Hearst; Ub Iwerks helps create Mickey Mouse.
Charles Sumner gets caned on the Senate floor; Judge J. Waties Waring helps end segregation.
Abraham Lincoln tries to avoid assassination on the way to his inauguration.
Disc jockey Alan Freed brings popularity to rock 'n' roll music; Kris Kristofferson writes songs.
Scientist Percy Julian overcomes racial barriers, Claudette Colvin refuses to give up her bus seat months before Rosa Parks's famous protest, and Joe Louis fights German boxer Max Schmeling. Featuring Jordan Peele, Terry Crews and "Weird Al" Yankovic
South Park waits for the meteor shower; Kyle and Ike go camping.
Shelly invites her somewhat unsuitable boyfriend to join her when she babysits for Cartman.
Cartman files a sexual harassment suit against Stan.
While camping, the boys discover the last two living Jakovasaurs.
Chef finally finds the girl of his dreams, but the boys feel like they've lost their best friend.
The citizens of South Park are exploding randomly. Stan's Dad is on the case.
The boys are sent to the Costa Rican rainforest as a part of the Getting Gay with Kids choir tour.
The boys' discovery of a man encased in ice threatens Stan and Kyle's friendship.
Kimball takes Johnson to her Christian Karaoke singles' mixer.
Garcia goes under cover to bust undocumented workers and the people who hire them.
Williams and Wiegel consider tampering with an election; Jones and Garcia tangle with a drug dealer.
Spanish Mike Alvarez returns to confuse the deputies.