Portside

In Port Elizabeth, South Africa, shopping center the international award-winning Nelson Mandela Metropolitan University Choir delights shoppers and passers-by.

NASA reconstructs five billiion years of the history of Mars in a breathtaking animation. There were once lakes and blue skies.

Rock group Buffalo Springfield (including Stephen Stills and Neil Young) perform their most influential song, For What It's Worth.

Jonathan Gruber, key architect of the Massachusetts health care law talks with Rachel Maddow about the law’s similarities to the Affordable Care Act