Ever notice the girls who mature quicker?

It's easy to chalk it up to an evolving society. Everything happens quicker, faster, earlier for the generations that follow. Exposure to the media, the Internet, and an immediacy for information puts our children (or in some cases, our children's children) in fast forward.

New research, however, shows that environmental factors of early puberty might hit closer to home than you think.

International studies have cited divorce as the culprit behind a range of medical conditions, from asthma and eczema to diabetes — in addition to deteriorating the environment.

Now you can add early puberty to the list. The University of Arizona, in conjunction with New Zealand's University of Canterbury, studied the effects of absentee fathers and divorce on adolescent development, and found that young females without a positive paternal influence developed earlier — sometimes as much as one year's difference.

Early puberty has been linked to teen pregnancy and various health issues, including breast cancer.

Researchers haven't determined why this is so, but have suggested an evolutionary biology link. Says the University of Arizona article:

"The idea is that children adjust their development to match the environments in which they live," Ellis said. "In the world in which humans evolved, dangerous or unstable home environments meant a shorter lifespan, and going into puberty earlier in this context increased chances of surviving, reproducing and passing on your genes."

We all know kids are strong, brilliant, resilient in the face of adversity...and apparently, they're hard-wired as such — right down to their DNA.