In this March 17, 2020, photo, Carol Sterling, 83, gives a thumbs-up to Liam Elkind after he delivers groceries to her apartment as part of a newly formed volunteer group he cofounded, Invisible Hands. The retired arts administrator has been sheltering at home in the coronavirus outbreak, unable to shop for herself. Yearning for some fresh food, she found the 20-year-old through their synagogue and soon he showed up at her door with a bag full of salad fixings and oranges. (…

March 18, 2020