Balkan Migrants Stranded Without Aid Supplies

The UNHCR tells BBC Newsday thousands of migrants who have reached the Balkans are without supplies of food, water or shelter. We find out how moles on your arm could determine whether you are at risk of skin cancer. And, the race to save London's Big Ben.

(Photo: Migrants sit in the rain as they and hundreds of others are prevented from crossing into Slovenia, at a border crossing with Croatia. Credit: AP)