Tag: Public Health England
How effective is the first shot of the Pfizer or Moderna...
William Petri, University of Virginia
As the COVID-19 vaccines reach more people across the country, some people have asked:...
EXPLORING NATURE
Giant ground sloths’ fossilized teeth reveal their unique roles in the...
Larisa R. G. DeSantis, Vanderbilt University and Aditya Reddy Kurre, University of Pennsylvania
A two-toed sloth at the...
