The concept of humanity vanishing from existence may seem like something straight out of a futuristic sci-fi thriller. However, experts warn that this ominous possibility could one day become a harsh reality—perhaps in thousands, or even millions, of years.

Fortunately, scientists from the University of Southampton have unveiled a groundbreaking plan that may hold the key to humanity’s survival: a '5D memory crystal.' This innovative data storage device, which can potentially endure the ravages of time for billions of years, may serve as a blueprint to resurrect humanity, even if our species were to face extinction.

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In a monumental achievement, the research team has successfully encoded the entire human genome into a single crystal, which is now securely stored in the Memory of Mankind archive, a specialized time capsule hidden deep within the salt caves of Hallstatt, Austria. This crystal is unlike any other data storage format we've seen, capable of safeguarding up to 360 terabytes of information without degrading—even when subjected to extreme temperatures.

According to the scientists, this cutting-edge storage technology offers unparalleled durability. A representative from the University of Southampton explained: "The crystal is equivalent to fused quartz, one of the most chemically and thermally durable materials on Earth. It can withstand the high and low extremes of freezing, fire, and temperatures of up to 1,000°C. The crystal can also withstand direct impact forces of up to 10 tons per cm² and remains unchanged after prolonged exposure to cosmic radiation."

The crystal's incredible longevity has already earned it a Guinness World Record in 2014 as the most durable data storage material.

Led by Professor Peter Kazansky, the team used ultra-fast lasers to etch the data into nano-structured voids within silica, with dimensions as minuscule as 20 nanometres. "Unlike marking only on the surface of a 2D piece of paper or magnetic tape, this method of encoding uses two optical dimensions and three spatial coordinates to write throughout the material – hence the '5D' in its name," a university spokesman elaborated.

Although we are not yet capable of creating humans synthetically from genetic data alone, the researchers believe that the 5D memory crystal ensures that, if the technology were to advance, future scientists could use this stored data to restore humanity. Professor Kazansky referenced the groundbreaking achievement of Dr. Craig Venter’s team in 2010 when they synthesized a living bacterium in a lab, noting: "We know from the work of others that genetic material of simple organisms can be synthesized and used in an existing cell to create a viable living specimen in a lab."

He went on to say that the 5D memory crystal opens new avenues for future research, potentially allowing complex organisms, like plants and animals, to be brought back to life should science advance far enough to permit it.

In addition to housing the human genome, the crystal also contains a visual key explaining the building blocks of life—hydrogen, oxygen, carbon, and nitrogen—and the structure of DNA, from its bases to the chromosome level. "The visual key inscribed on the crystal gives the finder knowledge of what data is stored inside and how it could be used," said Professor Kazansky.

The crystal has now been sealed in the Memory of Mankind archive, where it will wait, potentially for eons, to be rediscovered. The university spokesman remarked: "When designing the crystal, the team considered if the data held within it might be retrieved by an intelligence (species or machine) which comes after us in the distant future. Indeed, it might be found so far into the future that no frame of reference exists."

In a world where extinction is not an impossibility, this indestructible 5D memory crystal might just be humanity's last hope—a testament to our existence and a chance for rebirth in a distant future.