Researchers now estimate that more than 40,000 children in the United States have lost a parent to Covid-19. Per the estimates, published recently in JAMA Pediatrics, for every 13 people who die of Covid-19 in the US, one person under the age of 18 loses a parent. It’s part of a broader grief crisis that’s likely to leave a lasting toll on society. The death of a loved one at any age is hard. But for young people, it can be particularly destabilizing, altering the course of their lives.