Human newborns arrive remarkably underdeveloped. The reason lies in a deep evolutionary trade-off between big brains, bipedalism and the limits of motherhood.

A new study explains why humans have chins while other primates do not. Researchers found that the chin likely formed as a ...

Life on Earth began in a way that still boggles the mind. Around 4.5 billion years ago, a chemical process called abiogenesis ...

Since publication of their paper, “spandrel” has become shorthand among evolutionary biologists for an incidental trait, or ...

One of the defining features of human evolution is the steady expansion of our brains. New findings suggest this growth may be partly linked to higher levels of estrogen before birth. Surprisingly, a ...

Biologists have debated the reason why Homo sapiens evolved a prominent lower jaw, but this unique feature may actually be a by-product of other traits shaped by natural selection ...

Dashiell Hammett mentioned Sam Spade's jutting chin in the opening sentence of his novel, "The Maltese Falcon." Spade's chin ...

Learn how the chin became an evolutionary byproduct that's unique to humans.

Living on Mars, humans would experience just 38% the gravity of Earth and would be exposed to much more radiation. These two ...

The evolution of human hands is one of the most important – and overlooked – stories of our origin. Now, new fossil evidence ...

“The chin evolved largely by accident and not through direct selection, but as an evolutionary byproduct resulting from ...

Humans' exposure to high temperature burn injuries may have played an important role in our evolutionary development, shaping ...