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 ...

"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 ...

Mount Kilimanjaro, as seen from Kenya (Wikimedia Commons/Sergey Pesterev) (CN) — An explosion of the human population around Mount Kilimanjaro, Africa’s tallest mountain, over the past 100 years has ...

While most estimates place the current human population at around 8.2 billion, a new study suggests we might be vastly underrepresenting rural areas. By analyzing 300 rural dam projects across 35 ...

Here’s what you’ll learn when you read this story: While most estimates place the current human population at around 8.2 billion, a study suggests we might be vastly underrepresenting rural areas. By ...