A hip-hop enthusiast from New York City had always heard that 1520 Sedgwick Avenue in the Bronx is the birthplace of hip-hop. History Detectives investigates! Watch now.

My American Girls poignantly documents a year of the lives of the Ortiz family, first-generation immigrants from the Dominican Republic. The hard-working parents pursue the American Dream, and their American-born daughters hold a different set of values. Watch online through April 2, 2009. (originally aired: 2002)

The epic history of the Druids, one of more than a dozen wolfpacks now occupying the 2.2 million acres of Yellowstone (repatriated in 1996), is documented in this film, produced and shot by Emmy-award winning filmmaker Bob Landis. Watch now!

91-year-old Howie ‘Louie Bluie’ Armstrong has two great loves: his music and artist Barbara Ward. Watch “Sweet Old Song”, about these two creative forces’ collaboration–their lives. The film, which aired on P.O.V. in 2002, will be streaming in its entirety from March 2, 2009 to May 2, 2009.

In this interview from San Francisco, Charlie talks to Evan Williams, the co-founder and CEO of Twitter, one of today’s most popular social networking Web sites. With six million users, it’s an international phenomenon. Watch now.

Acclaimed opera singer Jessye Norman is the curator of Honor!, a festival celebrating African American music and arts presented by Carnegie Hall through March 23. SundayArts talks to Norman about the festival and the contributions of African American artists. Watch now.

Driverless cars, intelligent traffic signals, road signs that speak to cars and cars that speak to drivers… these new designs might help save 21,000 of the 43,000 deaths annually recorded on America’s highways. Watch a new report about progress in auto transportation technology.

You can watch Reel 13’s Indie for March 7, the animated movie “Sita Sings the Blues”, IN FULL online only on Thirteen! “Sita” is animator Nina Paley’s modern masterpiece, a breakup story that’s both personal and universal, told in about 5 different animation styles. It’s really spectacular. Watch now.

This week Gov. David Paterson talks with Andrew Ross Sorkin about New York state’s finances and what the stimulus package will mean for New York. Nassau County Executive Tom Suozzi explains how his county — the second wealthiest in New York state — will try to reinvent itself amid demographic shifts and the financial crisis.

This week Worldfocus spotlights the issues facing South Africa today, including xenophobic hostilities towards its immigrant population, the devastating AIDS crisis in the province of KwaZulu-Natal, and class divisions and continuing poverty in the post-apartheid era. Watch all.