The A-level exams were cancelled in March in response to the spread of COVID-19. Subject grades in the UK were originally awarded according to a teacher-assessed ranking of...

The A-level exams were cancelled in March in response to the spread of COVID-19. Subject grades in the UK were originally awarded according to a teacher-assessed ranking of...
The R rate has become synonymous with the COVID-19 pandemic. If R is above 1, infections rise exponentially, if R is below 1, the virus eventually disappears. The...