Life on Earth had to begin somewhere, and scientists think that “somewhere” is LUCA—or the Last Universal Common Ancestor.

Here is a microscopic view of these tiny creatures from the documentary "Invisible World." There are more living things on our bodies than people on Earth. The ability to see these creatures up close ...

An curved arrow pointing right. The largest living thing on the planet is not a whale or any other animal you might expect. It is a giant fungus that kills anything in its path, currently taking ...

Today, Earth’s magnetic field acts as a safety blanket, shielding the planet from dangerous solar wind. Without the ...

Our planet’s first known mass extinction happened about 440 million years ago. Species diversity on Earth had been increasing ...

The biggest living thing on Earth is a massive fungus. Whales, redwood trees, and elephants are all very big — but they're not the largest living organism on the planet by acreage. That title ...

That's a cosmic ray. That was initiated by a particle, probably a proton that hit the Earth's atmosphere. Now, imagine if one of those hits the DNA of a living thing. What that will do is cause a ...

From tiny puddle-dwelling creatures that can survive in outer space to a paint so dark that your eyes can't actually even see it, the Earth is filled with plenty of strange and incredible things.