New mask guidelines at Greensboro Science Center and NC Zoo North Carolina Gov. Roy Cooper announced last Friday, effective immediately, masks will no longer be required in most indoor settings. Author: Callie Clendenin Updated: 8:15 PM EDT May 18, 2021 GREENSBORO, N.C. — The Greensboro Science Center has lifted its mask restrictions for people who are vaccinated. However, for all classes and summer programs, kids will be required to wear face coverings. Marketing manager Erica Brown said, "For us, this is a science-based organization, we really believe in the science behind with the CDC in the North Carolina Department of Health and Human Services has said. So we are following their guidelines."