In June, a first-of-its-kind lawsuit will go to trial in Montana. The case, Held v. Montana, centers on the climate crisis. Sixteen young plaintiffs allege their state government has failed in its obligation, spelled out in the state constitution, to provide residents with a healthful environment. The psychiatrist Dr. Lise Van Susteren is serving as an expert witness and intends to detail the emotional distress that can result from watching the environmental destruction unfolding year after year. “Kids are talking about their anger. They’re talking about their fear. They’re talking about their despair. They’re talking about feelings of abandonment,” she tells David Remnick. “And they don’t understand why the adults in the room are not taking more action.” Dr. Van Susteren is a co-founder of the Climate Psychiatry Alliance, a network of mental-health providers concerned with educating colleagues and the public about the climate crisis.