Alzheimer’s disease has been described as “the great unlearning.” But what does it reveal about the nature of human identity? What remains when memory unravels? Alan Dienstag is a psychologist who has led support groups with early Alzheimer’s patients, as well as a writing group he co-designed with the novelist Don DeLillo. He’s experienced the early stages of Alzheimer’s as a time for giving memories away rather than losing them.

What Adele Diamond is learning about the brain challenges basic assumptions in modern education. Her work is scientifically illustrating the educational power of things like play, sports, music, memorization, and reflection. What nourishes the human spirit, the whole person, it turns out, also hones our minds.

Dr. Sherwin Nuland died this week at the age of 83. He became well-known for his first book, How We Die, which won the National Book Award. For him, pondering death was a way of wondering at life — and the infinite variety of processes that maintain human life moment to moment. He reflects on the meaning of life by way of scrupulous and elegant detail about human physiology.

The light and smells in places like hospitals can often depress us. And, our favorite room at home keeps us sane. But why? Immunologist Esther Sternberg explains the scientific research revealing how physical spaces create stress and make us sick — and how good design can trigger our “brain’s internal pharmacies” and help heal us.

Neuroscientist Richard Davidson is revealing that the choices we make can actually “rewire” our brains. He’s studied the brains of meditating Buddhist monks, and now he’s using his research with children and adolescents to look at things like ADHD, autism, and kindness.

Michael McCullough describes science that helps us comprehend how revenge came to have a purpose in human life. At the same time, he stresses, science is also revealing that human beings are more instinctively equipped for forgiveness than we’ve perhaps given ourselves credit for. Knowing this suggests ways to calm the revenge instinct in ourselves and others and embolden the forgiveness intuition.

The American experience of stress has spawned a multi-billion dollar self-help industry. Wary of this, Esther Sternberg says that, until recently, modern science did not have the tools or the inclination to take emotional stress seriously. She shares fascinating new scientific insight into the molecular level of the mind-body connection.