Was Labour shadow chancellor Rachel Reeves wrong about the increase in the price of the weekly shop? What has the violence at sea done to the cost of shipping? Why did YouGov feel the need to correct an analysis of their polling? Are there 30 million GP appointments every month? And how does wind chill work?Tim Harford investigates the numbers in the news.

Presenter: Tim HarfordReporters: Charlotte McDonald and Nathan GowerProducer: Debbie RichfordSeries producer: Tom CollsProduction co-ordinator: Brenda BrownSound Mix: Rod Farquhar