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Vitamin D, explaining R and the 2 metre rule
Is Vitamin D an under-appreciated weapon in the fight against Covid-19?
Covid-19 fatality rate
Why don't we know how dangerous Covid -19 really is?
Testing truth, fatality rates, obesity risk and trampolines.
Did the UK really carry out 100,000 coronavirus tests in one day?
Climate change and birdsong
With factories closed and flights grounded, what impact will this have on climate change?
Ethnic minority deaths, climate change and lockdown
Are doctors from ethnic minority backgrounds disproportionately affected by Covid-19?
Comparing countries' coronavirus performance
Is it helpful to ask which countries are faring better in tackling the coronavirus?
Bonus Podcast: Professor John Horton Conway
Mathematician John Conway died in April as a result of Covid-19.
Comparing countries, the risk to NHS staff, and birdsong
We compare Covid-19 rates around the world. When is the UK going to be past the worst?
Superforecasting the Coronavirus
Can professional predictors help us understand the course of the coronavirus pandemic?
Should you wear a face mask?
Tim Harford looks at the debate over making your own Covid-19 protection.
