Dozens of pro-Palestine demonstrators at Columbia University in New York City have escalated their protest over the war in Gaza by occupying an academic building. Also on the programme: we speak to New Yorkers as their city is set to become the first in America to adopt a congestion charge; And a BBC investigation uncovers chilling details of an Iranian teenager's death in detention. (Photo: Protestors link arms to barricade themselves in Hamilton Hall at Columbia University, in New York city. Credit: REUTERS)