Our planet’s first known mass extinction happened about 440 million years ago. Species diversity on Earth had been increasing over a period of roughly 30 million years, but that would come to a halt ...

Serendipity struck a group of Ohio State University geologists last December as they picked away at the stratified sediment in an ancient ... a single supercontinent, called “Gondwanaland ...

The NASA satellite image shows rust-red rock formations in Wyoming—evidence of 220-million-year-old 'megamonsoons'.

Pangaea, the ancient supercontinent, holds fascinating clues about Earth’s history and its future. From shifting continents to climate changes, discover what this geological wonder can teach us ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Archaeologists ...

Apr. 14, 2025 — Wealth inequality began shaping human societies more than 10,000 years ago, long before the rise of ancient empires or the invention of writing. That's according to a new study ...

The vibrant period of Ancient Greek civilization from 1200 BCE to 323 BCE gave us exceptional achievements that we continue to benefit from today. It was a long stretch of time that spanned from ...

But trees didn’t yet exist during the Silurian period, so what exactly was this thing taking over the ancient supercontinent of Gondwana? That argument was never truly settled. Most scientists ...

Now, a farmer is reviving this ancient "superfood". It's a hot and muggy summer day in Sicily's Madonie mountains, a rugged range of ridges about 65km east of Palermo. In a field of ash trees ...