Researchers found that vertebrate eyes - including humans’ - began as brain tissue from a single ancestral light-sensing organ.

As our species (Homo sapiens) evolved and spread across the globe, they were contemporary with several other hominins. These ...

The sympathetic nervous system, which enables the fight-or-flight response, was thought to be present only in jawed vertebrates. Analysis of a jawless vertebrate suggests that this system might be a ...

Humans tend to put our own intelligence on a pedestal. Our brains can do math, employ logic, explore abstractions and think critically. But we can’t claim a monopoly on thought. Among a variety of ...