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How were the vaccines tested?
Like any medical drug, vaccines are tested in large-scale randomised controlled trials.
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How effective are the vaccines — and how do we know this?
The efficacy of vaccines is estimated from trials, using statistical techniques.
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Since herd immunity will protect us all, why do I need to get vaccinated?
Because the vaccine may not stop transmission of the virus.
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Are the vaccines safe?
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.
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What's the price for relaxing the rules?
We are all longing to go into a lower tier, but this can come at a high price later on.
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The Plus advent calendar 2020
While away the days to Christmas exploring the history and mysteries of the Universe!
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Some lovely proofs by picture
Don't like trigonometry? Don't worry, here are three beautiful proofs of a well-known result that make do without it.
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Maths in a minute: Triangular numbers
Triangular numbers: find out what they are and why they are beautiful!
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Physics in a minute: The double slit experiment
One of the most famous experiments in physics demonstrates the strange nature of the quantum world.
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The fingernail problem and metallic numbers
A beautiful geometric problem opens the door to the world of metallic numbers.
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Clearing the air: Making indoor spaces COVID safe
New research shows that ventilation is crucial and that masks are effective.
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The maths of COVID-19
All our COVID-19 related coverage at a glance.