2.1 kids per woman might not be enough for population survival, new research reveals

Human populations need at least 2.7 children per woman—a much higher fertility rate than previously believed—to reliably avoid long-term extinction, according to a new study published in the open-access journal PLOS One by Takuya Okabe of Shizuoka University, Japan, and colleagues.

source https://phys.org/news/2025-04-kids-woman-population-survival-reveals.html