DNA As An Archival Storage System
DNA is really coming along as a digital storage device. George Church and Sri Kosuri create strands of DNA that store 96 bits (bases represent binary values [T and G = 1, A and C = 0]).
Once in storage, as many copies as you like can be created. Church stored a copy of one of his books - about 700 kilobytes of data - and then made 70 billion copies.
(DNA archival storage video)
To read the data stored in DNA, you simply sequence it — just as if you were sequencing the human genome — and convert each of the TGAC bases back into binary. To aid with sequencing, each strand of DNA has a 19-bit address block at the start (the red bits in the image below) — so a whole vat of DNA can be sequenced out of order, and then sorted into usable data using the addresses.
For long-term archival storage, DNA is a pretty good medium, although the read/write cycle takes a bit longer than your typical SSD. And just think: about four grams of DNA theoretically could store the digital data humankind creates in one year.
Fantasy writer Barbara Hambly uses a similar idea in her 1982 Darwath trilogy. She describes how wizards succeeded in tying information to the DNA of selected individuals.
In the story, several people from 1980's California find themselves transported across the Void to another planet and the Realm of Darwath. They face a deadly species of queerly magical beings - the Dark - who destroyed civilization thousands of years ago. Everything that was made of paper (like books and records) were burned to stave off attacks by the Dark. Tying memories to a few suitable bloodlines was the only way to preserve a record of that period that would endure.
Church and Kosuri, on the other hand, reject the idea of using the DNA of living cells:
Although other projects have encoded data in the DNA of living bacteria, the Church team used commercial DNA microchips to create standalone DNA. “We purposefully avoided living cells,” Church said. “In an organism, your message is a tiny fraction of the whole cell, so there’s a lot of wasted space. But more importantly, almost as soon as a DNA goes into a cell, if that DNA doesn’t earn its keep, if it isn’t evolutionarily advantageous, the cell will start mutating it, and eventually the cell will completely delete it.”
SF writers have long wished for high density data storage, of whatever medium. Consider the Schrön Loop from Dan Simmons' 1989 novel Hyperion and the memory diamond from Charles Stross' 2004 novel Iron Sunrise.
Via ExtremeTech and Harvard.
Scroll down for more stories in the same category. (Story submitted 8/18/2012)
Follow this kind of news @Technovelgy.
| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |
you like to contribute a story tip?
Get the URL of the story, and the related sf author, and add
Comment/Join discussion ( 0 )
Related News Stories -
Data Crystals Offer Eternal Storage
'The books were crystals with recorded contents...' - Stanislaw Lem, 1961.
Storing 1 Zettabyte In 10 Grams
'It is theoretically possible to have a matrix in which each individual molecule has a meaning...'- Robert Heinlein, 1951.
Six Terabyte Solid State Drive Just 2.5 Inches
'A man or woman could carry AIs or complete planetary dataspheres...'
Revault Wearable Private Cloud Is Too Vaporous
'A man or woman could carry AIs or complete planetary dataspheres...'- Dan Simmons, 1989.
Technovelgy (that's tech-novel-gee!)
is devoted to the creative science inventions and ideas of sf authors. Look for
the Invention Category that interests
you, the Glossary, the Invention
Timeline, or see what's New.
Mobility Scooters Go Offroad
'Noiselessly, on rubber-tired wheels, they journeyed down the long aisles...'
RAMST - Robotically Assembled Modular Space Telescope
'The eight thin metallic legs were pointed downwards, balanced delicately...'
Terminal Snooping At Bloomberg
'The evidence began with a slowed response at her computer terminal.'
Will There Be A Digital Afterlife?
'A quick exchange of energies resulting from the relocation of discorporate states.'
ROCKY - Resistive Overload Combined With Kinetic Yo-Yo
'Joe got out the gravity-simulator harnesses..'
China Bans Self-Driving Car Testing
Innovation hits some bumps.
Robotic Lawnmower Fulfills SciFi Homeowner's Dreams
'The mower reached the edge of the lawn, clucked to itself like a contented hen...'
7-Eleven Drone Delivers Chix Sandwich And Slurpee
'It was a smooth ovoid floating a few inches from the floor...'
Beta-Ti3Au Titanium-Gold Alloy Hardest Tissue-Compatible Metal
It needs a more science-fictional name!
Solar Plane Circles The Globe
'Tropism-like pursuit of the sun across the sky as they recharged their batteries...'
Audiobooks - Fastest Growing Format In Publishing
'The public preferred lectons...'
SuperMeat - Crowdfunding Pohl/Kornbluth's Chicken Little
'Chicken Little, who would be sliced and packed to feed people from Baffinland to Little America.'
Martian-Grown Food Might Be Fine
'I don’t want to come off as arrogant here, but I’m the best botanist on the planet.'
MARLO Robot Attempts Wave Field
'It is apparent that he will walk before his human brother.'
3RDiTEK Lifeblogging Headband Camera
'It's logging anyway - everything you see on duty goes into the black box.'
3D-Printed Biohybrid Is A Tissue-Engineered Robot
'The directing neurological tissue that forms the basis of the swibble is alive...'
More SF in the News Stories
More Beyond Technovelgy science news stories