Gesamtlänge aller Episoden: 8 days 3 hours 49 minutes
What’s behind the recent fall in life expectancy in America?
Why are US lawmakers asking questions about evidence of extra-terrestrial life?
Do Brazil’s original inhabitants hold the key to the preservation of the Amazon?
The challenge of meeting climate targets for economies dependent on oil production.
How did South Africa’s infrastructure go from world class to decrepit?