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 ...

For maybe a month there would be no sign that life was about to come to an abrupt and nasty end for all living things on Earth. Then, earthquakes would start unexpectedly, alerting geologists that ...

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.

Ancient trees like Methuselah and Alerce Milenario serve as living records ... region on Earth. Whichever tree, whether Methuselah or Alerce Milenario, takes the title, one thing is clear, Nature ...

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 ...