Science

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Covid-19: Making sense of “R”

It’s a useful but much misunderstood concept for explaining the course of the epidemic

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Science | 19 May 2020

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Enjoy the fresh air while it lasts! Lockdown causes drop in SA air pollution

This may be little comfort to people facing hunger or crippling job losses because of the lockdown, but air pollution is nevertheless a major global killer

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Science | 8 May 2020

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Tim Noakes interview is dangerously misleading

And it contains elementary errors

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Science | 13 April 2020

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Covid-19: Come on South Africa, let’s make masks

Home-made masks can help protect us from the virus

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Science | 10 April 2020

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Covid-19: What do South Africa’s numbers mean?

We explain confirmed cases, death rates and more

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Science | 8 April 2020

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Beware these fake claims about Covid-19

We debunk nonsense being spread about the pandemic

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Science | 6 April 2020

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How many people could die of Covid-19 in South Africa?

Researchers estimate deaths based on Chinese and Italian data. But we can take action to stop the worst outcomes

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Science | 29 March 2020

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Covid-19: Why testing takes time and what to expect

There’s a lot more going on behind the scenes in the testing labs than most patients realise

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Science | 25 March 2020

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Covid-19: Why “test, test, test” is easier said than done

Both money and logistics are barriers to scaling up the number of tests for the novel coronavirus

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Science | 17 March 2020