Coronavirus FAQ: How long does my post-COVID protection last? When is it booster time?
Health
9 months ago
We regularly answer frequently asked questions about life in the era of COVID-19. If you have a ques...
immunity
Black Death survivors gave their descendants a genetic advantage — but with a cost
Health
2 years ago
When the bubonic plague arrived in London in 1348, the disease devastated the city. So many people d...