A new virtual art show at Truro Center for the Arts at Castle Hill, “What Is Push/Pull? Artists Respond,” is up for browsing at castlehill.org through October 8th. There are works by Alana Barrett, Ana Silbert, Anne Doolitte, Anne Mai, Anne Webb-Johnson, Carol Krieger, Gretchen Jacobs, Joanne Barrett, Karen Fagelman, Katalene Masella, Maeve O’Donovan, Mary Ann O’Loughlin, Laura Shabott, and Rosanne Williams.