MIT’s Cornucopia: 3D printing with food

Paul Raven @ 18-01-2010

Ah, those crazy geeks and boffins at MIT – is there any idea they can’t run with so far and long that it ceases to make any sense whatsoever? Here’s your trajectory: you already know about 3D printing, right? And that there’s a 3d printer called the CandyFab, which specialises in fabbing objects using the tooth-rottingly delectable medium of edible sugars?

So why not go all the way and propose the Cornucopia – a 3D printer that can output almost any sort of food ingredient you can imagine in almost any three-dimensional matrix, plus make sure it’s all cooked properly? [initial tip from @BLDGBLOG, whence a long chain of relinks takes us to Shapeways; image courtesy MIT Fluid Interfaces group]

As a thought-experiment into the possible uses of fabrication technology, it’s a pretty neat idea… but it’s taken me about two minutes to create a ten-strong list of impracticalities that make it an utterly pointless endeavour. I suppose the justification would be that the interim research into fluid dynamics, microscopic fabrication/extrusion, focussed heating and complex programming would produce a whole raft of new avenues for development… but come on, MIT guys’n'girls! Couldn’t you be turning those big brains to developing something we actually need?


Technology and population growth

Tom James @ 28-09-2009

fieldThere’s a great interview over at New Scientist with environmentalist and techno-realist Jesse Ausubel on the subject of how technology and improved agricultural practices may enable and support continued population growth and economic prosperity:

You’ve said that we could feed 10 billion people on half the area we currently use by improving agricultural efficiency. How would that work?

High yields are the best friend of nature. Even if humans remain carnivorous, if we continue lifting yields at roughly 2 per cent per year, as farmers have achieved over the past 100 years, then simple arithmetic shows lots of land now farmed will be abandoned and can return to nature. The world population is increasing by only around 1 per cent per year, so sustaining 2 per cent yield growth could free half of farmed land over 75 years or so. The highest yields that have been achieved in China, India, the US and many other countries are typically 300 per cent of average yields, so 2 per cent yearly gains are not miracles. They are business-as-usual, but with a lot of sweat.

It’s weird to hear someone talking about population growth as if it was something manageable, rather than something to be worried about. I was particularly intrigued by the notion of quorum sensing:

Surely our inability to limit ourselves is a major issue.

Some recent research suggests organisms do try to sense limits. Even bacteria turn out to have networks of social communication and to use something called quorum sensing to coordinate their gene expression according to the local density of their population, and so avoid disastrous growth.

Ever the optimist, I see no reason why problems like global warming, deforestation, or resource depletion should not eventually be resolved. It rarely seems to be a matter of practical or even economic barriers, but rather political will to take the kind of action needed.

Clean air laws and action taken on the ozone layer show that it is possible to make the necessary changes.

[image from Olof S on flickr]


Your vat-grown burger will be ready in a decade, sir

Paul Raven @ 01-08-2009

brunch burgerWe’ve mentioned the potential of vat-grown meat here before, but I thought it worth bringing up again in light of an article at Wired UK that goes into more technical detail about the processes involved in growing cultured muscle for human consumption. [image by Marshall Astor]

“We’re developing a very simplified version of what we know as meat,” he explains. “The cells are grown in this dish within a growing medium and this unit is where they receive the electrical stimulation. These electrodes ensure there is an electrical current – about 1Hz – passing through the cells. To make these skeletal cells develop into muscle, they need to be constantly exercised, just like in the body.” This, he explains, is one of the scientific hurdles for in vitro meat that has not yet been fully addressed. “We can convert stem cells into skeletal muscle cells; however, turning them into trained skeletal muscle appears to be a little harder.”

They seem pretty confident about having a commercially viable product within a decade or so… but it’s probably going to delight the tastebuds about as much as the food you get on budget airlines:

“I don’t think we will spend a whole lot of time trying to replicate the taste of meat, though – that will be artificially added later. The food industry is already expert at enhancing taste – creating the right texture is the Holy Grail.”

Why complicate matters, adds Post, when you can nurture skeletal muscles to produce a simple, lean meat? Strip away the connective tissue, blood vessels and fat – as many of us do when we prepare a chicken breast prior to cooking it – and you’re left with a lean fillet of meat which consists of, roughly, 75 per cent water, 20 per cent protein and three per cent fat. Post believes that we are not too far away from producing this kind of meat on a commercial scale – ten years, perhaps. Convincing in vitro steaks and chops are probably a few decades away.

I guess the problem here is that the stuff will never sell until it comes out cheaper than real off-the-hoof meat. Once that price point is reached, however, I suspect the take-up rate will skyrocket.


Europe in 2030: An Optimist Predicts

Tom Marcinko @ 22-07-2009

small worldSo you want an optmistic vision? How about a vision named after Voltaire’s absurdly optimistic hero?

Publishing “Candide’s Garden” in Spielgel Online, Wolfram Eilenberg, who teaches international studies at Indiana University, advances this bracing hypothesis:

Anyone who now wants to talk about the future of Europe must first grasp the fact that we are — at this moment — experiencing a European utopia that has been cultivated for millennia.

The dogma-free, democratic marketplace of ideas, for which Socrates gave his life in Athens, is today a communicative reality in which hundreds of millions of citizens are actively taking part.

Eilenberger, who it turns out is not Dr. Pangloss after all, warns of big changes ahead, but he believes the European Union is well-positioned to weather them. We are entering an age of instant information accompanied by a scarcity of fuel, food, and water.

Put simply, the world will become bigger again.

… Instead of a globalized world economy that crosses continental barriers with ease, we will see continental autarchic zones being formed that will be shaped by the military defense of the basic resources available in each zone. We will thus see the logic of imperial expansion replaced by an aspiration to autarchic inclusion (already the EU strategy). The internal market of each zone will reassume economic primacy. This process does not have to end in war. It could well take an ordered course and lead to a multipolar equilibrium, the stability of which — like that of the Cold War — is guaranteed by an awareness of what military options are not available.

OK, that is sounding a good deal less optimistic. “Does not have to end in war” could mean “may well end that way.” But Eilenberger believes the EU is well positioned to weather these changes:

In cultural terms, Europe is equipped with a plurality of languages that lends itself to innovation as well as a global lingua franca: English (though by 2030 Spanish will be the European Union’s second main language). It is not burdened by any politically effective fundamentalisms, and Europe’s communications and transportation infrastructure leads the world. The thesis of a relative optimum also holds in demographic terms.

As for the USA – well, it’s up to those of us who live there, and our willingness to adapt.

An entire way of life, including the country’s suburban landscapes, will have to be fundamentally restructured. Today it is estimated that this inevitable process of economic and infrastructural renewal — one that will certainly also present new opportunities — will take at least twenty years to complete and, as is already becoming evident, will follow the process of reorientation to internal markets characteristic of autarchic zones. Furthermore, the already irreversible linguistic and cultural Hispanicization of its southern regions means that the United States will face greater integration challenges than will Europe with its smaller Muslim minorities.

Put in more positive terms, the way the United States develops will depend crucially on its readiness to consciously Hispanicize itself and — together with Brazil — to see itself in the long term as the strongest link within a pan-American community.

Which underlines the need to improve our discourse. Europeans, you should hear what our Confederate Party says about you, not to mention about people who speak Spanish. (Oops, is calling Republicans mean names the best way to improve our discourse? Self-criticism to follow. Could just be the reaction of an American with Euro-envy.)

I have no idea whether Eilenberger is right, but it’s a well-thought-out, wide-screen argument that he lays out. We need more of that in science fiction, too.

[Image: JasonRogersFooDogGiraffeBee]


Big Food: What to do about hypereating

Tom Marcinko @ 21-05-2009

lolHere’s an optimistic vision of the future, from the last page of The End of Overeating by former US Food & Drug Administration commissioner David A. Kessler, MD (available here and elsewhere; reviewed here; author interview by Stephen Colbert here.)

A change in perspective cannot be imposed with mandates, but must evolve as a social consensus. The goal is not to vilify all food and those who serve it, but to change our thinking about big food, those huge portions of layered and loaded food with little nutritional value. We need to look differently at the people and the places that serve it. When their power to manipulate our behavior becomes fully transparent, cues will lose their capacity to entice. Instead of expecting food to be served at every social and business occasion, we’ll realize that many offers of food outside mealtimes do not serve anyone’s interest.

In the future, new social norms and values will emerge, and food choices, offered in smaller portion sizes, will seem ‘right’ to us. That will be what we come to expect, and that will be what we want.

So, yes, as research for my optimstic sf story, I broke down, bought, and read this book, which is short, readable, and provocative.

Kessler’s thesis is that since the 80s, millions of Americans have been on a binge of conditioned hypereating, brought about by a food industry that knows how to get people to keep chowing down even when they’ve eaten more than enough. They do it with marketing, focus grouping, advertising, and even such childishly simple methods as making food easier to chew and swallow.

Kessler cites enough neuroscience data from human and animal experiments to put together a working hypothesis of marketing-driven food addiction. Among other things, the industry excels at creating tastes, textures, situations, and associations that rewire the brain to want more and more of certain kinds of foods. For example,

…[A]n animal that eats a combination of sucrose, chocolate, and alcohol releases the greatest levels of dopamine [a brain chemical associated with "attentional bias."].

Not surprisingly, these foods have layers of sugar, salt, and fats — often in repeating geological layers. It’s akin to the tobacco industry’s striving to make cigarettes even more addictive. The food merchants seem to accomplish their goals more by trial and error than through pure research, but the result is plain for all to see: A serious obesity problem with, at the very least, a larger health care bill attached.

People need to take responsibility, and Kessler lays out some steps that will probably spawn a lot of self-help books (some of us can use the help). He simply asks that people watch how they feel when exposed to food or come-ons to the same, and alter their behavior accordingly. And maybe do what the French, he says, do, or at least used to do: Take your time at the table, and don’t eat between meals. Old-fashioned, and easier said than done.

He has policy suggestions, too. Some of them ought to be adopted for the sheer entertainment value of the outrage and resistance they’re likely to provoke.

  • Restaurants should list calorie counts, “by mandate, if they’re not willing to do so voluntarily.
  • Food package labels should contain percentages of added sugars, refined carbs, and fats.
  • Public education should focus a jaundiced eye on “big food.”
  • And my personal favorite: Marketing should be monitored and exposed.

Our greatest gift to future generations … would be to find a way to prevent the cue-urge-reward-habit cycle from ever taking hold.

There’s optimism for you. And there’s got to be some way to turn this into a story.

[I Can Haz Cheezburger?, due to sheer lack of willpower]


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