Is the first dose of the Pfizer Covid-19 vaccine 52% or 90% effective?
David Sumpter describes the algorithms ruling the world
Tim Harford showcases statistics from 2020
What to consider when buying presents this year
Tackling statistics spread by conspiracy theorists.
Is it too soon to approve a vaccine for use? Plus choosing who goes first.
Which countries are doing well at keeping track of the virus? And which are not?
If you go to a gathering of 25 people, what are the chances one of you has coronavirus?
How much protection will a new Covid 19 vaccine give?