Russia's population faces its worst decline in centuries with birth rates plummeting to historic lows. The government ...

The story of Great Lakes whitefish is not a happy one, state fish biologist Stephen Lenart warned on July 10, but it needs to ...

New census data shows immigration driving unprecedented US population growth as baby boomers age and birth rates decline across racial groups.

The population of Bigg’s killer whales — which is believed to be in the hundreds — has grown since the government stopped ...