The Archean Eon

The Archean Eon is a significant period in Earth's history, lasting from about 4 billion to 2.5 billion years ago. During this time, the Earth’s crust cooled enough for continents to form, and the atmosphere began to change. Life emerged, primarily simple single-celled organisms like bacteria. These microorganisms began to shape the planet’s environment, even influencing the development of early atmospheric gases. The Archean Eon set the foundation for more complex life forms that followed in later eons, making it a crucial chapter in the story of our planet's evolution.