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Health, Sports & Psychology
The refugees hoping to make a splash at Rio 2016
This year's Olympics includes a team of Refugees for the first time. Hear some of the athlete's stories - and find out why their participation is central to the Olympic ideal.
Health, Sports & Psychology
What do sports authorities have to do to take account of transgender competitors?
Transgender people are now able to compete at the Olympics - but there are some who worry this might create opportunities for cheating. Katharina Lindner explores the questions.
Society, Politics & Law
The History of Money
Where did money come from? How did people trade before inventing money? Was it a masterstroke or madness (or both) to let banks create money? Today money is generally accepted as payment for goods and services or repayment of debt. But governments still fret about whether there's too much (or too little) in circulation, economists can't agree ...