The miracle that saves the world, the realm of human affairs, from its normal, «natural» ruin is ultimately the fact
of natality, In which the faculty of action is ontologically rooted.
This totaled 5,427,689 births recorded in the National Center for Health
Statistics natality files.
National Center for Health Statistics
natality files were used to analyze 1996 — 2003 live births in four Central Appalachian states (N = 1,889,071).
The study also developed novel non-invasive monitoring methods such as camera traps and underwater surveys for monitoring lair sites and for making better estimations
of natality and perinatal mortality.
Heavy ice conditions in the mid-1970s and mid-1980s caused significant declines in productivity of ringed seals, each of which lasted about 3 years and caused similar declines in
the natality of polar bears and survival of subadults, after which reproductive success and survival of both species increased again.