Two-thirds of the world's population already lives in countries where fertility is below this so-called replacement rate, a McKinsey study said. Falling birth rates have put major global economies on ...
Live Science on MSN
'Mystery population' of human ancestors gave us 20% of our genes and may have boosted our brain function
The ancestors of all modern humans split off from a mystery population 1.5 million years ago and then reconnected with them ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback