Welcome to brain Stuff from how Stuff works. Hey, brain stuff, Christian Sager here. So as far as aging goes, humans have it pretty good. I mean, we're no giant tortoises, but we're generally capable of living for decades, some of us for more than a century. Here at brain Stuff, it got us thinking, what is the world's oldest living thing? Well, that's a tricky question, and the answer depends on how we define living and thing. First, let's tackle what we
mean by thing. If we say a thing could also be a clonal colony, then the competition heats up quickly. There are numerous plant and fungal clone colonies that have been around for tens of thousands of years, and they're still barreling along. There's King Clone, the creosote bush in the Mojave, almost twelve thousand years old. And we can't forget Pando, the gigantic male quaking aspen clonal colony in Utah.
He is about eighty thousand years old. Incidentally, he's also the heaviest living thing, weighing in around six million kilograms. But what if we stick to single organisms. If so, then the tiny end a liths are strong contenders. These extreme aphile methuselahs like to kick back and take it easy. For millions of years, they've lived a mile and a half below the ocean floor, with metabolism slower, the molasses only reproducing once every few centuries or millennia. I mean
that makes pandas look like rabbits. There's a big, let's call it loophole in the definition of living dormancy. What if something was frozen in time, trapped in stasis, and then revived like Captain America or the Alien and the Thing. In two thousand and eleven, professor Brian Schubert published a paper on just that he discovered bacteria in what he called a kind of hibernation state inside tiny bubbles of
thirty four thousand year old salt crystals. Their scientists have claimed to find older organisms, such as the two hundred and fifty million year old bacteria in southeast New Mexico, but Schubert's work was independently reproduced. So if we allow an organism to take a time out and spend thousands of years in stasis, there are loads of competitors for the title of oldest living thing, many of which may still lurk undiscovered in the isolated hinter lands of Earth.
You know, deep oceans, remote mountains, endless Arctic wastes. Now I'm thinking of HP Lovecraft. Well, moving on, there's one other important thing. Some organisms might be immortal. Now, don't get jealous. We're not talking about some super sexy vampire type immortality. No, we're talking about jellyfish, specifically hydra and the tour autopsis story. The tour autopsis is only four point five millimeters large, but capable of something that may
be unique in the animal world. After reaching sexual maturity, it can revert to its polyp stage, it can reverse and reset its aging cycle, rendering it biologically immortal, and the hydra doesn't seem to age at all. That means that potentially the oldest living organism could one day be a jellyfish. But for now, even counting states of dormancy, the oldest living, continually active things on Earth appear to
be the extreme file organisms collectively called endoliths. But of course there may be something older, buried in time, dormant, waiting for intrepid humans to wake it from its deathless slumber. Check out the Brainstuff channel on YouTube and for more on this and thousands of other topics. Visit how stuff works dot com.