Explore the history of life on Earth, from 3.5-billion-year-old fossils to the vast diversity of species on our planet today.

Before sunlight ever reached the planet, another force may have sparked life—electricity. Deep beneath the ocean floor, ancient hydrothermal vents might have generated natural electric fields strong ...

How did life begin on Earth? While scientists have theories, they don't yet fully understand the precise chemical steps that led to biology, or when the first primitive life forms appeared. But what ...

How life arose remains a looming question in science that researchers are seeking to answer by studying the features shared among life today. Everything alive is made up of cells, and what made the ...

Scientists have pushed back LUCA’s origin by hundreds of millions of years.

Life on Earth: Attenborough’s Greatest Adventure is available to stream on pbs.org and the free PBS App, available on iPhone, Apple TV, Android TV, Android smartphones, Amazon Fire TV, Amazon Fire ...

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

A collaborative team of scientists has discovered that life on Earth over three billion years ago relied on the metal ...

Stromatolites might look like rocks. But they are living relics of ancient systems that thrived on Earth billions of years ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Here’s what you’ll learn when you read this story: Life on Earth had to begin somewhere, and scientists ...