This photo provided by the National Institutes of Health shows the James H. Shannon Building on the NIH campus in Bethesda, Md., in 2015. Author: Sophie Rosenthal Published: 8:24 AM EDT March 31, 2025 ...

The event, which includes children's activities, will be held from 8:30 a.m. to 3 p.m. Saturday in the Natcher Conference Center, Building 45, at 45 Center Dr. on the NIH campus.