How many foreigners have joined militants in Iraq and Syria, and where do they come from?
How long might you live?
What has been achieved in the ten years since Live 8 sought to Make Poverty History?
Tim Harford explains the Greek economic crisis with a little help from Homer’s Odyssey
Tim Harford looks at the numbers to tell the story of the Greek crisis.
Jurassic World took $511m in its first weekend. Why have recent films done so well?
Can your horoscope predict which diseases you will develop?
Do we need one and a half planets worth of resources?
Is the World Cup really responsible for migrant deaths in Qatar?
The life and achievements of the mathematician John Nash