Gesamtlänge aller Episoden: 10 days 2 hours 55 minutes
Experts warn that North Korea could wipe out most Americans in one go.
Is there evidence that one in four people will develop a mental health problem?
They’ve become a bit of a phenomenon but what’s the evidence that they work?
Did China use more concrete in three years than the US in the 20th Century?
Are our attention spans now shorter than a goldfish's?
Top Hollywood actresses have complained that they are paid less than their male co-stars