If we vaccinate the top four priority groups by February, how much will things change?
Is the first dose of the Pfizer Covid-19 vaccine 52% or 90% effective?
Missing coronavirus case data, long-term symptoms, and a big mathematical moment.
Case counts in perspective, a suspect stat from the US, and life lessons from insects.
How fast are coronavirus cases doubling? Plus testing confusion and a royal face-off.
Confusing claims on lab capacity, the UK’s record on asylum, and the volume of eyelashes.
How worrying is the UK’s jump in cases? Plus balancing risks and the speed of jelly-fish.
Evidence on Covid-19 risks in schools, data on contact tracing, and a philosophical query.
Claims about a Covid-19 treatment, breast cancer screening, and 18th century sex workers.
We unpick the A-level algoshambles and discover what poker teaches us about statistics.