Sophie Kent and Lauri Wright each gave their children an allowance pegged to their age or grade — for example, $5 a week at five years old, $6 at six, and so on.

Interesting.

There is a long history here. A second set of new programs — the humanist individualists — owe more to the experiments of the counterculture era: schools like Evergreen State College, founded in Olympia, Wash., in 1967; Kresge College at the University of California, Santa Cruz, founded soon after; or the Jack Kerouac School of Disembodied Poetics, founded in Boulder, Colo., in 1974 by the poets Allen Ginsberg and Anne Waldman. These schools combined an interest in Eastern spirituality with the principles of humanistic psychology and the human potential movement, which emphasized the goodness in all humans and their gift for self-actualization.

“The average American causes through his/her greenhouse gas emissions the serious suffering and/or deaths of two future people.”

Earlier this year, the climate activist Greta Thunberg completed a cross-European speaking tour by train, which helped bring the Swedish concept of flygskam, or “flight shame,” to a wider audience.