Modelling shows that old and vulnerable people should be prioritised.
Like any medical drug, vaccines are tested in large-scale randomised controlled trials.
The efficacy of vaccines is estimated from trials, using statistical techniques.
Because the vaccine may not stop transmission of the virus.
Yes the approved vaccines are safe. If you balance the risks, then taking the vaccine is much safer than taking your chances with COVID-19.
We are all longing to go into a lower tier, but this can come at a high price later on.
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One of the most famous experiments in physics demonstrates the strange nature of the quantum world.
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New research shows that ventilation is crucial and that masks are effective.
Maria Bruna has won a Whitehead Prize for finding a systematic way of simplifying complex systems.