New Study Suggests Complex Life on Earth Began 2.1 Billion Years Ago

Research indicates early animal-like organisms existed in nutrient-rich inland seas but did not spread globally.

Scientists found evidence of complex life forms in Gabon dating back 2.1 billion years, 1.5 billion years earlier than previously believed.
The organisms thrived in a nutrient-rich inland sea created by underwater volcanic activity and continental collisions.
High levels of phosphorus and oxygen in the environment may have facilitated the development of these early life forms.
The isolated environment ultimately led to the extinction of these organisms due to lack of sustained nutrients.
The findings have sparked debate among scientists, with some calling for more evidence to support the claims.