It has also become a big driver in the number of older single mothers in the U.S. at a time when the country's overall birth ...

WINCHESTER, Va. — It's 6 a.m. and still dark outside. But Adrienne Rumley's two-bedroom apartment is alive with kinetic energy. A 4-month-old kitten darts around. A big dog patters back and forth.

Single mom Adrienne Rumley gets herself and her 2-year-old daughter, Lorelei, ready in the wee hours of the morning in Winchester, Va. Her mornings, days and evenings operate with clockwork precision ...