Covid origin: Why the Wuhan lab-leak theory is so disputed
The claim Covid-19 leaked from a Chinese laboratory dates from early in the pandemic. Here’s what we know. Source link
Cold weather: What does an unheated room do to your body?
The BBC’s health and science correspondent undergoes an experiment to find out how a cold home affects him. Source link
Covid map: Coronavirus cases, deaths, vaccinations by country
Key maps and charts explaining how the virus has spread around the world. Source link
Vaping – is it a risk-free option?
Colourful gadgets and fruity flavours are popular, but what’s really known about their health effects? Source link