Tim Harford investigates whether e-cigarettes harm people's chances of quitting.
Are there problems with the way we judge the harms from alcohol? Tim Harford finds out.
Does it matter that 62 people now own as much wealth as half of the world's population?
Jeremy Hunt says if you have a stroke at the weekend, you are 20% more likely to die.
Is there a north-south divide in the amount of money spent on flood defences in England?
Tim Harford looks back at some of the most interesting numbers behind the news in 2015.
Tim Harford asks whether one in three people born in the UK this year will get dementia.
Tim Harford asks are strikes on the rise, rugby players bigger and sea life in decline?
Can the left rely on non-voters to get them into power? Tim Harford looks at the numbers.
Are people dying after being declared 'fit for work' by the government? With Tim Harford.