Do poorer communities have fewer plant and animal species?

A new study confirms that the “luxury effect” is real


Science | 23 June 2020

Covid-19: Making sense of “R”

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


Science | 19 May 2020

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


Science | 8 May 2020

Tim Noakes interview is dangerously misleading

And it contains elementary errors


Science | 13 April 2020

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

Home-made masks can help protect us from the virus


Science | 10 April 2020

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

We explain confirmed cases, death rates and more

By and

Science | 8 April 2020

Beware these fake claims about Covid-19

We debunk nonsense being spread about the pandemic


Science | 6 April 2020

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


Science | 29 March 2020

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


Science | 25 March 2020

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

By and

Science | 17 March 2020

Hope for HIV vaccine being tested in South Africa

While it’s too soon to be confident, a vaccine originally tested in Thailand has shown promising early results


Science | 20 September 2019

Ambitious plans underway for homegrown South African climate change model

“We should not just sit and wait for others to bring us solutions. We should be part of the solution.”


Science | 29 July 2019

HIV drug studies offer patients more choices

But new regimens are not problem-free


Science | 26 July 2019

South African researchers develop quicker way to detect drug resistance

Local man develops resistance to new TB medicine despite good adherence


Science | 10 July 2019

Quack claims about oxygen treatment are dangerous

Charlatans exploit patients for financial gain, say doctors


Science | 15 March 2019

South Africa’s KAT has begun prowling the universe

MeerKAT is tuning into thousands of “radio channels” at a time


Science | 5 March 2019