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How British scientists discovered the new Covid-19

AstraZeneca COVID-19 vaccine could be approved in the UK “shortly after Christmas”

New coronavirus strain divides scientists as UK and others act to reduce the spread

BioNTech chief says more tests needed to see if vaccine protects against new strain COVID-19

The Covid-19 variant could make herd immunity more difficult, says BioNTech

Hospitals are facing tensions over who gets the first Covid-19 vaccine

The year in space travel

Sinovac Covid-19 vaccine has been shown to be effective in studies in Brazil

Sinovac Covid-19 vaccine has been shown to be effective in studies in Brazil

Should you be concerned about the new COVID-19 strain? Here’s what you need to know