Colorado's 'green rush'

This week, Colorado weighs up the pros and cons of its move to legalise cannabis, one year on. Next, we look at the story of Alberto Nisman, the prosecutor who was found dead just a day before he was due to testify about a suspected government cover-up. Finally, Cuba's rapprochement with the United States is attracting investors who want to get their hands on a piece of the island's unique cultural heritage.