Challenge trials – purposefully exposing volunteers to the coronavirus – could speed up the development of a vaccine. But there are serious ethical concerns with this approach.

Framing cats as responsible for declines in biodiversity is based on faulty scientific logic and fails to account for the real culprit – human activity.

The high cost of pharmaceuticals often means only the richest patients get lifesaving medicines. As coronavirus drugs emerge, it will require hard, creative work to ensure they're available to all.

Being a member of a certain age group shouldn't be a liability.