Small numbers of patients seem to be incubators for coronavirus mutation. What does this mean for our efforts to fight the virus?
Why the CDC may update its guidance on masking, plus more science news stories from the week.
The new administration made quick work of rolling back key science policy positions of the Trump era.
Critics say the new rule could be used to hamper new environmental regulations.
FDA advisors recommended Moderna’s vaccine for emergency use Thursday, one step shy of full authorization. Plus, scan the skies for Jupiter and Saturn’s coming conjunction.
Two encouraging COVID-19 vaccine trials reported strong clinical results this week. So what comes next?