Sitting quietly at your desk, watching TV, or lying in bed at night, your heart should be taking it easy – beating steadily and calmly at somewhere between 60 and 80 beats per minute for most healthy ...

China's population fell for the second consecutive year as the birth rate reached a record low. The government has tried to address the issue by reversing old policies and giving incentives. But an ...

The Trump administration’s ideologues keep coming back to birth rates. The new National Security Strategy, released on Friday, declares that Europe is facing “the stark prospect of civilizational ...