About the episode
More or Less look at the street value of drugs: when police claim that they've confiscated hundreds of millions of pounds worth of narcotics, where do those numbers come from? And how has the dark internet changed drug prices?
They'll also be looking at claims that those of us who aren't binging on drugs are binging on biscuits instead. Apparently much of the UK and almost the entire population of Ireland is going to be obese before long. But how have such alarming forecasts fared in the past?
We're often told that we consume so much that we need one and a half planets - and not just to provide room for all those obese people. What does that number even mean, and is it helpful?
And Richard Thaler, the co-author of "Nudge", joins More or Less to talk about the psychology of risk.
Listen to More or Less
Tune into BBC Radio 4 on Friday 12 June at 16:30 to listen to this week's programme. It is repeated at 20:00 on Sunday 7 June. More information and a link to listen again later will be available from the BBC Website. See the series page on OpenLearn here.