COVID-19’s danger lay in its invisibility. The SARS-CoV-2 virus is highly contagious and can be passed on by people with light or no symptoms, making it extremely difficult to track and contain. But ...

The tiny African island of Príncipe is hard to reach but rewards travellers with its rich biodiversity and low-key luxury inns. When we land at Príncipe’s tiny airport, a sign declares that we have ...

The COVID-19 pandemic led to many changes. Among them is universal familiarity with a molecular diagnostic technique that was largely unknown outside clinical use. The polymerase chain reaction — or ...

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