According to a new study, fossils of a tiny sea creature with a delicately preserved nervous system solve a century-old debate over how the brain evolved in arthropods, the most species-rich group in ...

The first hint of a brain developed on Earth around 600 million years ago, and now, some version of the organ can be found in nearly every animal in the world. Humans have the largest brain size ...

EVANSTON, Ill. --- A groundbreaking new study reveals that changes to the gut microbiome can change the way the brain works. Humans have the largest relative brain size of any primate, but little is ...

New research has revealed that birds, reptiles, and mammals have developed complex brain circuits independently, despite sharing a common ancestor. These findings challenge the traditional view of ...

Recent fossil and skull studies reveal a surprising trend: Despite a fourfold increase in brain size starting around 2 million years ago, which coincided with major advancements in tool use, social ...

Fossils of a tiny sea creature that died more than half a billion years ago may compel a science textbook rewrite of how brains evolved. "To our knowledge, this is the oldest fossilized brain we know ...

In his new BBC show, Jim Al-Khalili journeys through hundreds of millions of years of brain evolution. Live Science spoke to him about what he learned along the way and how this knowledge sheds new ...