While it's impossible to pin down exactly, October 31 marks the symbolic date that the human population passes the 7 billion mark. Since it's impossible to track dynamic population data on such an ...

Population ecology is the study of how populations — of plants, animals, and other organisms — change over time and space and interact with their environment. Populations are groups of organisms of ...

Studying human evolution involves piecing together scattered clues about how we survived against tough odds. One of the biggest mysteries is understanding how large or small ancient human populations ...

We've long assumed our species evolved from a tidy, single stream of ancestors. But life on Earth is never quite so straightforward, especially not when it comes to the most socially complex species ...

A recent groundbreaking study has radically altered our understanding of human evolution. Homo sapiens, traditionally thought to have descended from a single lineage, is now believed to be the product ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Here’s what you’ll learn when you read this story: While most estimates place the current human ...

Over the past century, the world's human population has exploded from around 2 billion to 8 billion. Meanwhile, the average fertility rate has gradually declined. And if that trend continues as it has ...

The authors do not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and have disclosed no relevant affiliations beyond their ...