For over a century, scientists have wrestled with one of biology’s most fundamental mysteries: how the first animals evolved.

Himalayas reiterate a tale of planetary transformation — of drifting continents, lost oceans, and the birth of life itself.

From 3 billion years ago to roughly 600 million years ago—right at the dawn of complex life on the planet—the Earth’s oceans would’ve been significantly more green than they are today.

Without plants on land, humans could not live on Earth. From mosses to ferns to ... has compared algae and plants that span 600 million years of independent evolution and pinpointed a shared ...

Trees get most of the love, but diatoms, a group of photosynthetic microalgae, produce 20% of Earth's oxygen and are the ...

Without plants on land, humans could not live on Earth. From mosses to ferns to ... a research team has compared algae and plants that span 600 million years of independent evolution and ...

Credit: Oliver Hull/Monash University Earth may have sported a Saturn-like ring system 466 million years ago, after it captured and wrecked a passing asteroid, a new study suggests. The debris ...

And now, scientists hypothesize that Earth may have sported its own ring some 466 million years ago. During the Ordovician Period, a time of significant changes for Earth’s life-forms ...

By Becky Ferreira If you were to look up from Earth some 466 million years ago, you might have seen a gleaming ring stretching across the sky, some scientists say. A study published this month ...