Masaki Liberal Arts

The Calymmian Period: The “Purple Ocean” and Lost Alien World of 1.6 Billion Years Ago

(Editor's Note: This article is a digest version of the complete guide to the Calymmian Period. It explores the most fas...

Proterozoic Eon (~2.5 billion years ago — 541 million years ago)

Searches for the Achaemenid Empire tend to start with small, practical questions. What does the word actually mean? How ...

The Mesopotamian Civilization Series (c. 5,500 Years Ago –)

When modern readers encounter the history of ancient Mesopotamia, few names evoke as much grandeur or confusion as Babyl...

The Mesopotamian Civilization Series (c. 5,500 Years Ago –)

In the staggering 4.6 billion years of Earth's history, there may be no other era so misunderstood, yet so decisive for ...

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Do you know the "Stenian Period"?It is a geological era about 1.2 billion to 1 billion years ago, often categorized unde...

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When you look back at Earth's history, you might imagine the Jurassic period where dinosaurs roamed, or the Cambrian per...

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Throughout Earth's staggering 4.6 billion year history, perhaps no other era was as harsh or as enveloped in silence as ...

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What was the Early Dynastic period of Mesopotamia, and why does it matter today?If you have heard of ancient Mesopotamia...

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At 4.2 light-years, Proxima Centauri b is the nearest known exoplanet to Earth.In cosmic terms, that is almost next door...

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When you look back at Earth's history, you might imagine the Jurassic period where dinosaurs roamed, or the Cambrian per...

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