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.
2.1 kids per woman might not be enough for population survival, new research reveals
Reader’s Picks
-
Nearly 1 in 5 adults in the U.S. lack access to reliable transportation, making it one of the country’s most [...]
-
As Americans become more polarized, even family dinners can feel fraught, surfacing differences that could spark out-and-out conflict. Tense conversations [...]
-
Indiana University researchers have taken an interdisciplinary approach to studying social media impacts on mental health, discovering an intervention that [...]