Teachers, Test & Trace and Butterflies

Prominent Labour politicians have claimed teachers are more likely to catch Covid-19, is that true? England’s Test and Trace programme has been widely criticised, has it raised its game in recent months? A ferocious row has broken out between scientists about how effective fast turnaround Lateral Flow tests are, and how they should be used. We examine the data. Plus, we examine a claim from Extinction Rebellion that British butterflies have declined by 50% since 1976.

Om Podcasten

Tim Harford and the More or Less team try to make sense of the statistics which surround us. From BBC Radio 4