Are there 21 million slaves in the world today? Read more
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Modern Slavery
Are there 21 million slaves in the world today?
Mailbox Edition
Your questions 鈥 from the USA, Australia and the world
Missing Planes
Could Bayesian statistics help find Flight MH370?
Is London France鈥檚 Sixth Largest City?
Are there really 300,000 French people in London?
Freedom in Numbers
How many people in the world live in freedom?
How many people in the world live in freedom? First broadcast live on 01 April 2014.
Nigeria - Rich or Poor?
How did Nigeria become the largest African economy overnight?
Magic Numbers
Do you have a favourite number - one you think stands out from all the others?
Killed for Being Female?
Are there 100 million women missing from the world?
Did Sir Roger Bannister make the 鈥榠mpossible鈥 possible?
A mile in under four minutes. Did positive thinking propel dozens to do the same?
Brazil鈥檚 Maths Superstar
Alex Bellos tells the surprising story of Brazil's favourite maths book.
Did Global Poverty Halve Overnight?
Does greater purchasing power in developing countries mean there are fewer poor people?
Risk Savvy
Gerd Gigerenzer on the famous probability puzzle involving goats and game shows
The Piketty Affair
Did 鈥榬ock-star鈥 French economist Thomas Piketty get his numbers wrong?
Spurious Correlations
Is the divorce rate in the US state of Maine linked to margarine consumption?
Heads Or Tails?
What can we learn about happiness if people make key life decisions based on a coin toss?
Money for Nothing?
When it comes to aid, what works best - providing goods, or handing over cash?
Is this the greatest World Cup ever?
We cast a sceptical eye over the statistics. Plus: are we seeing the death of tiki-taka?
Will we Die Before our Parents?
Will the current generation have a shorter life span than their parents due to obesity?
Golden Ticket
What are Charlie's odds of finding a golden ticket in Charlie and the Chocolate Factory?
The Tour de France
What is the best body type to win the Tour de France's yellow jersey?
The Prevalence of Paedophilia
If 2% of Catholic clergy are paedophiles how does this compare to the rest of society?
Fear of Flying
Following recent airline incidents, is flying more dangerous? Plus: Commonwealth Games.
How Deadly is Ebola?
It is claimed it kills up to 90% of victims, but fatality rates vary widely
Anti-Semitism
In the wake of the Gaza conflict, we investigate claims that anti-Semitism is rising.
Deaths in Gaza
Why are men over-represented in civilian death tolls and how are the statistics gathered?
Do We Use Only 10% of Our Brains?
It's the premise of a new film, but do we really get by using just 10% of our brains?
To Ice or Not to Ice?
The ALS ice bucket challenge has made $100m. How should we choose charities to donate to?
Shakespeare v Rappers
Who has the biggest vocabulary - the Bard or today鈥檚 rap stars?
The UK vs Mississippi
Is Britain really poorer than every US state, except for Mississippi?
Calculating the Distance to the Sun
Two young listeners ask how we calculate the distance to the sun