Science Fiction
Dictionary
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
 |
Bacterial 'Computer' Solves Math Problem
Modified E. coli bacteria were successfully engineered to solve a difficult mathematical puzzle, according to research published today in the Journal of Biological Engineering.
(Scanning electron micrograph of E. coli bacteria)
The DNA of the bacteria was modified to create a special purpose 'computing device' to solve the Hamiltonian Path Problem, a surprisingly intractable brainteaser. A simple example would be plotting the shortest possible route that would take you to the ten largest cities in the US from New York City to San Jose, California.
This simple problem is surprisingly difficult to solve. There are over 3.5 million possible routes to choose from, and a regular computer must try them out one at a time to find the shortest. Alternatively, a computer made from millions of bacteria can look at every route simultaneously...The researchers coded a simplified version of the problem, using just three cities, by modifying the DNA of Escherichia coli bacteria. The cities were represented by a combination of genes causing the bacteria to glow red or green, and the possible routes between the cities were explored by the random shuffling of DNA. Bacteria producing the correct answer glowed both colours, turning them yellow.
The experiment worked, and the scientists checked the yellow bacteria's answer by examining their DNA sequence.
Fans of sf writer Greg Bear recall his intellectual cells, specially engineered to solve problems.
His first E. coli mutations had had the learning capacity of planarian worms; he had run them through simple T-mazes, giving sugar rewards. They had soon outperformed planaria...
Via Bacteria make computers look like pocket calculators.
Scroll down for more stories in the same category. (Story submitted 7/26/2009)
Follow this kind of news @Technovelgy.| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |
Would
you like to contribute a story tip?
It's easy:
Get the URL of the story, and the related sf author, and add
it here.
Comment/Join discussion ( 0 )
Related News Stories - (" Computer ")
AI Worms That Spread
'...there were so many worms and counterworms loose in the data-net now' - John Brunner, 1975.
Great. Now AIs Have Access To Hacking Tools
'... when you and the Flatline punch through that ice and scramble the cores.' - William Gibson, 1984.
Tongue-Controlled Tong Wearable Mouth Computer
'Griff found the white and pink map distracting and switched it off using his tongue mouse.' - Greg Bear, 2007.
Interpol Launches Metaverse For Law Enforcement
'CopSpace sheds some light on matters, of course. Blink and it descends in its full glory.' - Charles Stress, 2007.
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.
Science Fiction
Timeline
1600-1899
1900-1939
1940's 1950's
1960's 1970's
1980's 1990's
2000's 2010's
Current News
Brin's 1990 Novel Earth Still Full Of Predictions
'... making the point that their likenesses, every move they made, were being transmitted.'
'Whisper Mode' ala Blue Thunder Researched At Bristol
'Forest Lawn.'
Gaia - Why Stop With Just The Earth?
'But the stars are only atoms in larger space, and in that larger space the star-atoms could combine to form living matter, thinking matter, couldn't they?'
Microsoft VASA-1 Creates Personal Video From A Photo
'...to build up a video picture would require, say, ten million decisions every second. Mike, you're so fast I can't even think about it. But you aren't that fast.'
Splendid View Of Eclipse From Orbit Visualized And Repurposed By Arthur C. Clarke
'The area affected was five hundred kilometres across, and perfectly circular.'
Bespoke Environment Music From AIs
'Call 'em Winter Mute," said the other, making it two words.'
Goldene - A Two-Dimensional Sheet Of Gold One Atom Thick
'Hasan always pitched a Gauzy - a one-molecule-layer tent, opaque, feather-light, and very tough.'
SpaceX Wants A Moonbase Alpha
'And he had been sent with troops, supplies and bombs to command Russia's most trusted post, the Moonbase.'
Vast Apartment Living Will Get Even More Vast
'What is your population', I asked. 'About eighty millions.'
NASA Wants Self-Driving Or Remote-Controlled Vehicles For Lunar Astronauts
'THE autobus turned silently down the wide street of Hydropole. Robot-guided, insulated from noise and cold...'
Elon Musk Says Robotaxis Will Be Ready This August, 2024
'The car had no steering wheel, and no one drove!'
Moonwalkers AI-Controlled Electric Shoes
Now that's power walking that Hugo Gernsback would have approved.
Steve Jobs: 'Capture The Next Aristotle - With AI'
'It was disturbing to think of the Flatline as a construct...'
No Tips! Robotic Food Delivery In Phoenix
'...he rewired the delivery robot so that it would serve him midnight snacks.'
Electric Catamaran 'Explorer Eco 40m' Has 'Solar Skin'
'On went the electric-yacht faster and still faster.'
Orbital Mechanics, The Liftoff, The Turnover, The Retrograde Burn
'...the huge vessel had spun, with a sickening lurch, through a complete half-circle, the instant the power was reversed.'
