An investigation into canine genetics, including what separates dogs from their wolf cousins. The report also delves into the science behind the dog-human relationship, revealing that dogs have a knack for reading and responding to human emotions.

Activists from five countries recount their efforts to improve their lives and the lives of others. Included: cleaning up New Orleans; overcoming anti-Gypsy discrimination in Bulgaria; stopping slavery in Mauritania.

Activists from five countries recount their efforts to improve their lives and the lives of others. Included: cleaning up New Orleans; overcoming anti-Gypsy discrimination in Bulgaria; stopping slavery in Mauritania. The documentary also chronicles the meeting of all five activists at a U.N. conference in Durban, South Africa. 

A three-part history of the region begins with the 17th-century immigration of European explorers and traders; the American revolution; and religious revivals in the 18th and early 19th centuries.

A look at baby animals in their first days, including chimpanzees, gorillas, marmosets and moose. The offsprings' relationships with their mothers are also explored, though not all are nurture-filled affairs. more info

"A Dream in Doubt" examines hate crimes against minorities in the U.S. after the 9/11 attacks, including the shooting death of Balbir Singh Sodhi in Arizona. more info

A profile of Dolley Madison (1768-1849), the spouse of fourth U.S. president James Madison, who transformed the role of president's wife and became America's "first" first lady. The biography includes remarks from Cokie Roberts ("Founding Mothers"). more info

The eighth season ends with "Sinking Atlantis," a report on the Minoan civilization, a Bronze-Age society on the isle of Crete. Included are remarks by archaeologist Sandy MacGillivray.

Journalist T.R. Reid examines communities in America where top-notch medical care is available at reasonable costs and, in some instances, can be accessed by almost all residents. Included: Mesa County, Colo.; Seattle; Everest, Wash.; Hanover, N.H. more info

Edward Asner and Blair Underwood star as the white Quaker abolitionist Thomas Garrett and the free, black anti-slavery activist William Still, who "conducted" runaway slaves to freedom. James McGowan is the narrator.