The immigration bill making its way through the Senate would put an end to the so-called 'Green Card Lottery.' The World's Jason Margolis explains why the proposed change has sparked anger among African immigrants living in the US.
Marco Werman talks with author Andrea Stuart, about her complicated family history. Stuart is descended from British settlers who went to Barbados in the 17th century, and from the slaves who worked on their sugar plantations.
The answer to today's Geo Quiz: Tanzania and Kenya - those two countries are home to the Maasai tribes people. The BBC's Will Grant caught up with six Maasai warriors who plan to run in this weekend's London marathon.