Join the Nauset Fellowship for “The Greatest Beach: The History of the Cape Cod National Seashore,” a virtual talk with Bill Burke, historian for the National Seashore, on Sunday, January 31th, at 10 a.m. It will address “what you always wanted to know about Cape Cod National Seashore but were afraid to ask — or asked and never got a straight answer.” Registration is free at nfuu.org.