Wednesday, October 08, 2008
Here's to 'Nowtopians' Everywhere!
The following, published in Orion Magazine, is adapted from Chris Carlsson's book Nowtopia: How Pirate Programmers, Outlaw Bicyclists, and Vacant-Lot Gardeners Are Inventing the Future Today, published by AK Press. It looks like it might be a good read – check it out!
* * *
Even while capitalism continues its inexorable push to corral every square inch of the globe into its logic of money and markets, new practices are emerging that redefine politics and open up spaces of unpredictability. Instead of traditional political forms like unions or parties, people are coming together in practical projects, from urban gardening in vacant lots to the suddenly ubiquitous do-it-yourself bike shops. More and more people, recognizing the degradation inherent in business relations, are creating networks of activity that refuse the measurement of money. They depend instead on sharing skills and technological know-how within new communities, such as the biofuels co-ops that have proliferated in many cities. Networks have grown, thanks to the spread of the Internet and other telecommunications techologies, and new kinds of “families” based on shared values, alternative living arrangements, and non-economic relationships are growing within the old society.
Collectively, I call these projects “Nowtopia.” Rarely do the individual participants conceive of them in political terms; day-to-day issues about how we live, what we do, how we define and meet our needs tend to be understood as outside politics. But all Nowtopian activities are profoundly political.
The Nowtopian movement embodies a growing minority seeking emancipation from the treadmill of consumerism and overwork. Acting locally in the face of unfolding global catastrophes, friends and neighbors are redesigning many of the crucial technological foundations of modern life, like food and transportation. These redesigns are worked out through garage and backyard research-and-development programs among friends using the detritus of modern life. Our contemporary commons takes the shape of discarded bicycles and leftover deep-fryer oil, of vacant lots and open bandwidth. “Really, really free markets,” anti-commodities, and free services are imaginative products of an anti-economy provisionally under construction by freely cooperative and inventive people. They aren’t waiting for an institutional change from on high but are building the new world in the shell of the old.
These practices require sharing and mutual aid and constitute the beginnings of new kinds of communities. Because these people are engaged in creative appropriation of technologies to purposes of their own design and choice, these activities embody the (partial) transcendence of the wage-labor prison by workers who have better things to do than their jobs. They are tinkerers working in the waste streams and open spaces of late capitalism, conjuring new practices while redefining life’s purpose.
Efforts to create islands of utopia have always flourished on the margins of capitalist society, but never to the extent that a radically different way of living has been able to supplant market society’s daily life. Nowtopians, and anyone determined to free themselves from the constraints of economically defined life, face the same historic limits that have beset all previous efforts to escape. Can the emerging patterns resist the co-optation and reintegration that have absorbed past self-emancipatory movements? The new apparatus of global production helps speed up the extension of market society, but it inevitably also speeds the spread of social opposition, the sharing of experiments and alternatives. Our moment in history is at least as exhilarating as it is daunting.
* * *
Even while capitalism continues its inexorable push to corral every square inch of the globe into its logic of money and markets, new practices are emerging that redefine politics and open up spaces of unpredictability. Instead of traditional political forms like unions or parties, people are coming together in practical projects, from urban gardening in vacant lots to the suddenly ubiquitous do-it-yourself bike shops. More and more people, recognizing the degradation inherent in business relations, are creating networks of activity that refuse the measurement of money. They depend instead on sharing skills and technological know-how within new communities, such as the biofuels co-ops that have proliferated in many cities. Networks have grown, thanks to the spread of the Internet and other telecommunications techologies, and new kinds of “families” based on shared values, alternative living arrangements, and non-economic relationships are growing within the old society.
Collectively, I call these projects “Nowtopia.” Rarely do the individual participants conceive of them in political terms; day-to-day issues about how we live, what we do, how we define and meet our needs tend to be understood as outside politics. But all Nowtopian activities are profoundly political.
The Nowtopian movement embodies a growing minority seeking emancipation from the treadmill of consumerism and overwork. Acting locally in the face of unfolding global catastrophes, friends and neighbors are redesigning many of the crucial technological foundations of modern life, like food and transportation. These redesigns are worked out through garage and backyard research-and-development programs among friends using the detritus of modern life. Our contemporary commons takes the shape of discarded bicycles and leftover deep-fryer oil, of vacant lots and open bandwidth. “Really, really free markets,” anti-commodities, and free services are imaginative products of an anti-economy provisionally under construction by freely cooperative and inventive people. They aren’t waiting for an institutional change from on high but are building the new world in the shell of the old.
These practices require sharing and mutual aid and constitute the beginnings of new kinds of communities. Because these people are engaged in creative appropriation of technologies to purposes of their own design and choice, these activities embody the (partial) transcendence of the wage-labor prison by workers who have better things to do than their jobs. They are tinkerers working in the waste streams and open spaces of late capitalism, conjuring new practices while redefining life’s purpose.
Efforts to create islands of utopia have always flourished on the margins of capitalist society, but never to the extent that a radically different way of living has been able to supplant market society’s daily life. Nowtopians, and anyone determined to free themselves from the constraints of economically defined life, face the same historic limits that have beset all previous efforts to escape. Can the emerging patterns resist the co-optation and reintegration that have absorbed past self-emancipatory movements? The new apparatus of global production helps speed up the extension of market society, but it inevitably also speeds the spread of social opposition, the sharing of experiments and alternatives. Our moment in history is at least as exhilarating as it is daunting.
Sunday, October 05, 2008
Bicycling Meditation, Colorado
Every bend in the road brings me new ideas; every dawn gives me fresh feelings.- Haiku writer Matsuo Basho; quote as a paraphrase of the original in The Te of Piglet by Benjamin Hoff

My home was at Cold Mountain from the start,
Rambling among the hills, far from trouble.
Gone, and a million things leave no trace
Loosed, and it flows through galaxies
A fountain of light, into the very mind -
Not a thing, and yet it appears before me:
Now I know the pearl of the Buddha nature
Know its use: a boundless perfect sphere.
- from The Cold Mountain Poems, by Han-shan, translated by Gary Snyder


As for me, I delight in the everyday Way,
Among mist-wrapped vines and rocky caves.
Here in the wilderness I am completely free,
With my friends, the white clouds, idling forever.
There are roads, but they do not reach the world;
Since I am mindless, who can rouse my thoughts?
On a bed of stone I sit, alone in the night,
While the round moon climbs up Cold Mountain.
- Han-Shan, 750, The Enlightened Heart, translated by Stephen Mitchell

Yeah man, you know to me a mountain is a Buddha. Think of the patience, hundreds of thousands of years just sittin there bein perfectly perfectly silent and like praying for all living creatures in that silence and just waitin for us to stop all our frettin and foolin.
– Japhy Ryder, in The Dharma Bums, by Jack Kerouac

In my first thirty years of life
I roamed hundreds and thousands of miles.
Walked by rivers through deep green grass
Entered cities of boiling red dust.
Tried drugs, but couldn't make Immortal;
Read books and wrote poems on history.
Today I'm back at Cold Mountain:
I'll sleep by the creek and purify my ears.
- from The Cold Mountain Poems, by Han-shan, translated by Gary Snyder


Cold Mountain is a house
Without beams or walls.
The six doors left and right are open
The hall is sky blue.
The rooms all vacant and vague
The east wall beats on the west wall
At the center nothing.
...
When men see Han-shan
They all say he's crazy
And not much to look at -
Dressed in rags and hides.
They don't get what I say
And I don't talk their language.
All I can say to those I meet:
"Try and make it to Cold Mountain."
- from The Cold Mountain Poems, by Han-shan, translated by Gary Snyder
From the Taoist alchemist Ko Hung:
The contented man can be happy with what appears to be useless. He can find worthwhile occupation in forests and mountains. He stays in a small cottage and associates with the simple. He would not exchange his worn clothes for the imperial robes, nor the load on his back for a four-horse carriage. He leaves the jade in the mountains and the pearls in the sea. Wherever he goes, whatever he does, he can be happy – he knows when to stop. He does not pick the brief-blossoming flower; he does not travel the dangerous road. To him, the ten thousand possessions are dust in the wind. He sings as he travels among the green mountains.
He finds sheltering branches more comforting than red-gated mansions, the plow in his hands more rewarding than the prestige of titles and banners, fresh mountain water more satisfying than the feasts of the wealthy. He acts in true freedom. What can competition for honors mean to him? What attraction can anxiety and greed possibly hold? Through simplicity he has Tao, and from Tao, everything. He sees the light in the ‘darkness,’ the clear in the ‘cloudy,’ the speed in the ‘slowness,’ the full in the ‘empty.’ The cook creating a meal with his own hands has as much honor in his eyes as a famous singer or high official. He has no profits to gain, no salary to lose; no applause, no criticism. When he looks up, it is not in envy. When he looks down, it is not with arrogance. Many look at him, but nobody sees him. Calm and detached, he is free from all danger, a dragon hidden among men.
- Quoted in The Te of Piglet by Benjamin Hoff
My route: Jefferson -> Breckenridge -> Leadville -> Twin Lakes -> Aspen -> Maroon Bells
Gone, and a million things leave no trace
Loosed, and it flows through galaxies
A fountain of light, into the very mind -
Not a thing, and yet it appears before me:
Now I know the pearl of the Buddha nature
Know its use: a boundless perfect sphere.
- from The Cold Mountain Poems, by Han-shan, translated by Gary Snyder


My pedal mechanism broke one evening outside of Leadville. I fixed it with some zip-ties. Zip ties are awesome, btw. I try to always have some zip ties on me in case of whatever.
This was a good-enough fix since without being able to clip in to these pedals they are basically useless. And the next day I was due to climb over Independence Pass (just shy of 12,100 ft, see below). I am a hardcore mofo but I don't think I can do that with only one leg.
The drawback with this quick-fix was that my foot was permanently affixed to the pedal - so to get out I had to undo the velco and take my shoe off. Getting back on was pretty awkward with the bike loaded down with gear - but I only fell over once, so I feel pretty good about that. And luckily I didn't crash, because if I would have, if the zip ties didn't break it probably would have ripped my leg off at the knee. But I took the descent into Aspen slow - the better to observe the fantastic scenery - and made it into the campground at Maroon Bells without incident - woo hoo!
Mount Elbert (tallest mountain in CO) - at sunset...
The path to Han-shan's place is laughable,
A path, but no sign of cart or horse.
Converging gorges - hard to trace their twists
Jumbled cliffs - unbelievably rugged.
A thousand grasses bend with dew,
A hill of pines hums in the wind.
And now I've lost the shortcut home,
Body asking shadow, how do you keep up?
- from The Cold Mountain Poems, by Han-shan, translated by Gary Snyder

There's a naked bug at Cold Mountain
With a white body and a black head.
His hand holds two book scrolls,
One the Way and one its Power.
His shack's got no pots or oven,
He goes for a long walk with his shirt and pants askew.
But he always carries the sword of wisdom:
He means to cut down senseless craving.
- from The Cold Mountain Poems, by Han-shan, translated by Gary Snyder
Converging gorges - hard to trace their twists
Jumbled cliffs - unbelievably rugged.
A thousand grasses bend with dew,
A hill of pines hums in the wind.
And now I've lost the shortcut home,
Body asking shadow, how do you keep up?
- from The Cold Mountain Poems, by Han-shan, translated by Gary Snyder

There's a naked bug at Cold MountainWith a white body and a black head.
His hand holds two book scrolls,
One the Way and one its Power.
His shack's got no pots or oven,
He goes for a long walk with his shirt and pants askew.
But he always carries the sword of wisdom:
He means to cut down senseless craving.
- from The Cold Mountain Poems, by Han-shan, translated by Gary Snyder
As for me, I delight in the everyday Way,Among mist-wrapped vines and rocky caves.
Here in the wilderness I am completely free,
With my friends, the white clouds, idling forever.
There are roads, but they do not reach the world;
Since I am mindless, who can rouse my thoughts?
On a bed of stone I sit, alone in the night,
While the round moon climbs up Cold Mountain.
- Han-Shan, 750, The Enlightened Heart, translated by Stephen Mitchell

Yeah man, you know to me a mountain is a Buddha. Think of the patience, hundreds of thousands of years just sittin there bein perfectly perfectly silent and like praying for all living creatures in that silence and just waitin for us to stop all our frettin and foolin.– Japhy Ryder, in The Dharma Bums, by Jack Kerouac

In my first thirty years of lifeI roamed hundreds and thousands of miles.
Walked by rivers through deep green grass
Entered cities of boiling red dust.
Tried drugs, but couldn't make Immortal;
Read books and wrote poems on history.
Today I'm back at Cold Mountain:
I'll sleep by the creek and purify my ears.
- from The Cold Mountain Poems, by Han-shan, translated by Gary Snyder


Cold Mountain is a houseWithout beams or walls.
The six doors left and right are open
The hall is sky blue.
The rooms all vacant and vague
The east wall beats on the west wall
At the center nothing.
...
When men see Han-shan
They all say he's crazy
And not much to look at -
Dressed in rags and hides.
They don't get what I say
And I don't talk their language.
All I can say to those I meet:
"Try and make it to Cold Mountain."
- from The Cold Mountain Poems, by Han-shan, translated by Gary Snyder
The contented man can be happy with what appears to be useless. He can find worthwhile occupation in forests and mountains. He stays in a small cottage and associates with the simple. He would not exchange his worn clothes for the imperial robes, nor the load on his back for a four-horse carriage. He leaves the jade in the mountains and the pearls in the sea. Wherever he goes, whatever he does, he can be happy – he knows when to stop. He does not pick the brief-blossoming flower; he does not travel the dangerous road. To him, the ten thousand possessions are dust in the wind. He sings as he travels among the green mountains.
He finds sheltering branches more comforting than red-gated mansions, the plow in his hands more rewarding than the prestige of titles and banners, fresh mountain water more satisfying than the feasts of the wealthy. He acts in true freedom. What can competition for honors mean to him? What attraction can anxiety and greed possibly hold? Through simplicity he has Tao, and from Tao, everything. He sees the light in the ‘darkness,’ the clear in the ‘cloudy,’ the speed in the ‘slowness,’ the full in the ‘empty.’ The cook creating a meal with his own hands has as much honor in his eyes as a famous singer or high official. He has no profits to gain, no salary to lose; no applause, no criticism. When he looks up, it is not in envy. When he looks down, it is not with arrogance. Many look at him, but nobody sees him. Calm and detached, he is free from all danger, a dragon hidden among men.
- Quoted in The Te of Piglet by Benjamin Hoff
My route: Jefferson -> Breckenridge -> Leadville -> Twin Lakes -> Aspen -> Maroon Bells

I’ve been reading Whitman, know what he says, "Cheer up slaves, and horrify foreign despots," he means that’s the attitude for the Bard, the Zen Lunacy bard of old desert paths, see the whole thing is a world full of rucksack wanderers, Dharma Bums refusing to subscribe to the general demand that they consume production and therefore have to work for the privilege of consuming, all that crap they didn’t really want anyway such as refrigerators, TV sets, cars, at least new fancy cars ... and general junk you finally always see a week later in the garbage anyway, all of them imprisoned in a system of work, produce consume, I see a vision of a great rucksack revolution thousands or even millions of young Americans wandering around with rucksacks [and on bikes!], going up to mountains to pray, making children laugh and old men glad, making young girls happy and old girls happier, all of ‘em Zen Lunatics who go about writing poems that happen to appear in their heads for no reason and also by being kind and also by strange unexpected acts keep giving visions of eternal freedom to everybody and to all living creatures…
– Japhy Ryder, in The Dharma Bums, by Jack Kerouac
Tuesday, September 23, 2008
Tuesday, September 09, 2008
Smokey The Bear Sutra
by Gary Snyder
***
Once in the Jurassic about 150 million years ago, the Great Sun Buddha in this corner of the Infinite Void gave a discourse to all the assembled elements and energies: to the standing beings, the walking beings, the flying beings, and the sitting beings--even the grasses, to the number of thirteen billion, each one born from a seed, assembled there: a Discourse concerning Enlightenment on the planet Earth.
"In some future time, there will be a continent called America. It will have great centers of power called such as Pyramid Lake, Walden Pond, Mt. Rainier, Big Sur, Everglades, and so forth; and powerful nerves and channels such as Columbia River, Mississippi River, and Grand Canyon. The human race in that era will get into troubles all over its head, and practically wreck everything in spite of its own strong intelligent Buddha-nature."
"The twisting strata of the great mountains and the pulsings of volcanoes are my love burning deep in the earth. My obstinate compassion is schist and basalt and granite, to be mountains, to bring down the rain. In that future American Era I shall enter a new form; to cure the world of loveless knowledge that seeks with blind hunger: and mindless rage eating food that will not fill it."
And he showed himself in his true form of
SMOKEY THE BEAR
A handsome smokey-colored brown bear standing on his hind legs, showing that he is aroused and watchful.
Bearing in his right paw the Shovel that digs to the truth beneath appearances; cuts the roots of useless attachments, and flings damp sand on the fires of greed and war;
His left paw in the mudra of Comradely Display--indicating that all creatures have the full right to live to their limits and that of deer, rabbits, chipmunks, snakes, dandelions, and lizards all grow in the realm of the Dharma;
Wearing the blue work overalls symbolic of slaves and laborers, the countless men oppressed by a civilization that claims to save but often destroys;
Wearing the broad-brimmed hat of the west, symbolic of the forces that guard the wilderness, which is the Natural State of the Dharma and the true path of man on Earth:
all true paths lead through mountains
With a halo of smoke and flame behind, the forest fires of the kali-yuga, fires caused by the stupidity of those who think things can be gained and lost whereas in truth all is contained vast and free in the Blue Sky and Green Earth of One Mind;
Round-bellied to show his kind nature and that the great earth has food enough for everyone who loves her and trusts her;
Trampling underfoot wasteful freeways and needless suburbs, smashing the worms of capitalism and totalitarianism;
Indicating the task: his followers, becoming free of cars, houses, canned foods, universities, and shoes, master the Three Mysteries of their own Body, Speech, and Mind; and fearlessly chop down the rotten trees and prune out the sick limbs of this country America and then burn the leftover trash.
Wrathful but calm. Austere but Comic. Smokey the Bear will Illuminate those who would help him; but for those who would hinder or slander him...
HE WILL PUT THEM OUT
Thus his great Mantra:
Namah samanta vajranam chanda maharoshana Sphataya hum traka ham mam
"I DEDICATE MYSELF TO THE UNIVERSAL DIAMOND
BE THIS RAGING FURY BE DESTROYED"
And he will protect those who love the woods and rivers, Gods and animals,
hobos and madmen, prisoners and sick people, musicians,
playful women,and hopeful children:
And if anyone is threatened by advertising, air pollution, television,
or the police, they should chant SMOKEY THE BEAR'S WAR SPELL:
DROWN THEIR BUTTS
CRUSH THEIR BUTTS
DROWN THEIR BUTTS
CRUSH THEIR BUTTS
And SMOKEY THE BEAR will surely appear to put the enemy out with his vajra-shovel.
Now those who recite this Sutra and then try to put it in practice will accumulate merit as countless as the sands of Arizona and Nevada.
Will help save the planet Earth from total oil slick.
Will enter the age of harmony of man and nature.
Will win the tender love and caresses of men, women, and beasts.
Will always have ripened blackberries to eat and a sunny spot under a pine tree to sit at.
AND IN THE END WILL WIN HIGHEST PERFECT ENLIGHTENMENT
...thus we have heard...
***
Once in the Jurassic about 150 million years ago, the Great Sun Buddha in this corner of the Infinite Void gave a discourse to all the assembled elements and energies: to the standing beings, the walking beings, the flying beings, and the sitting beings--even the grasses, to the number of thirteen billion, each one born from a seed, assembled there: a Discourse concerning Enlightenment on the planet Earth."In some future time, there will be a continent called America. It will have great centers of power called such as Pyramid Lake, Walden Pond, Mt. Rainier, Big Sur, Everglades, and so forth; and powerful nerves and channels such as Columbia River, Mississippi River, and Grand Canyon. The human race in that era will get into troubles all over its head, and practically wreck everything in spite of its own strong intelligent Buddha-nature."
"The twisting strata of the great mountains and the pulsings of volcanoes are my love burning deep in the earth. My obstinate compassion is schist and basalt and granite, to be mountains, to bring down the rain. In that future American Era I shall enter a new form; to cure the world of loveless knowledge that seeks with blind hunger: and mindless rage eating food that will not fill it."
And he showed himself in his true form of
SMOKEY THE BEAR
A handsome smokey-colored brown bear standing on his hind legs, showing that he is aroused and watchful.
Bearing in his right paw the Shovel that digs to the truth beneath appearances; cuts the roots of useless attachments, and flings damp sand on the fires of greed and war;
His left paw in the mudra of Comradely Display--indicating that all creatures have the full right to live to their limits and that of deer, rabbits, chipmunks, snakes, dandelions, and lizards all grow in the realm of the Dharma;
Wearing the blue work overalls symbolic of slaves and laborers, the countless men oppressed by a civilization that claims to save but often destroys;
Wearing the broad-brimmed hat of the west, symbolic of the forces that guard the wilderness, which is the Natural State of the Dharma and the true path of man on Earth:
all true paths lead through mountains
With a halo of smoke and flame behind, the forest fires of the kali-yuga, fires caused by the stupidity of those who think things can be gained and lost whereas in truth all is contained vast and free in the Blue Sky and Green Earth of One Mind;
Round-bellied to show his kind nature and that the great earth has food enough for everyone who loves her and trusts her;
Trampling underfoot wasteful freeways and needless suburbs, smashing the worms of capitalism and totalitarianism;
Indicating the task: his followers, becoming free of cars, houses, canned foods, universities, and shoes, master the Three Mysteries of their own Body, Speech, and Mind; and fearlessly chop down the rotten trees and prune out the sick limbs of this country America and then burn the leftover trash.
Wrathful but calm. Austere but Comic. Smokey the Bear will Illuminate those who would help him; but for those who would hinder or slander him...
HE WILL PUT THEM OUT
Thus his great Mantra:
Namah samanta vajranam chanda maharoshana Sphataya hum traka ham mam
"I DEDICATE MYSELF TO THE UNIVERSAL DIAMOND
BE THIS RAGING FURY BE DESTROYED"
And he will protect those who love the woods and rivers, Gods and animals,
hobos and madmen, prisoners and sick people, musicians,
playful women,and hopeful children:
And if anyone is threatened by advertising, air pollution, television,
or the police, they should chant SMOKEY THE BEAR'S WAR SPELL:
DROWN THEIR BUTTS
CRUSH THEIR BUTTS
DROWN THEIR BUTTS
CRUSH THEIR BUTTS
And SMOKEY THE BEAR will surely appear to put the enemy out with his vajra-shovel.
Now those who recite this Sutra and then try to put it in practice will accumulate merit as countless as the sands of Arizona and Nevada.
Will help save the planet Earth from total oil slick.
Will enter the age of harmony of man and nature.
Will win the tender love and caresses of men, women, and beasts.
Will always have ripened blackberries to eat and a sunny spot under a pine tree to sit at.
AND IN THE END WILL WIN HIGHEST PERFECT ENLIGHTENMENT
...thus we have heard...
Thursday, September 04, 2008
Thursday, August 28, 2008
Charcoals: Electron Microscopy Study
I worked some connections here at NC State Univ. and got a co-conspirator to scan some of the charcoal samples I brought back from Thailand with an electron microscope. SEM images are so cool!
The images just below are of charcoal made from longan wood (Dimocarpus longan). There are loads of these of these fruit trees throughout southern China, southeast Asia and the region around Pun Pun Farm. They grow them from layering and the trees never develop a strong tap root. So they have to prop the limbs up or the trees will blow over in a storm. And they have to prune them often - so it's very common to make charcoal from the prunings.

You can really see the macropore structure in some of these shots (note the scale bars at the bottom of each image...a "um" is a micro-meter, 10^-6 meter, or 1/1000 of a millimeter, for those not conversant in scientific notation).
This charcoal is made from coconut husk. It was not the best kind of coconut to made charcoal from - the thin hard shells of young coconuts. Probably charcoal made from the thick, woody shells of mature coconuts, and/or the coir would be better for our purposes. But this stuff does show some interesting surface morphology.

We would have to use TEM (transmission electron microscopy) to see the smallest pores, at the molecular scale (1 millionth of a millimeter and smaller). Then we'd actually be looking at the crystalline structure of the charcoals - that would be totally sick. But these SEM (scanning EM) images are good for getting a since of how porous charcoal materials are at the micro-level. So you can see how a couple tablespoons of this stuff can have the surface area - at the molecular level - of a football field. Plenty of space, in other words, to adsorb contaminants like nasssty pesticides!
Below is charcoal made from rice husks. It's an interesting material, but probably not very good for water filtration purposes because of its naturally high ash content from all the silica and minerals that make up the husk. Also, rice husk charcoal is not made in a kiln - husks are just piled onto a fire and allowed to smolder. So the pyrolysis is pretty low temperature, and oxygen is not well excluded - thus it doesn't develop awesome porosity/surface area and so is not a great water filtration charcoal.
But still interesting to look at in SEM - in the image, the husk on the left shows the underside, on the right the outer side of the husk. Cool eh? Very different morphology inside and out!

I had a great chat the other day with my man the electron-microscopy ninja when he brought me these images. (He snuck our samples in between runs of "official" work.) I told him about the project and our efforts to design simple/cheap systems for drinking water purification and he is down like 4 flat tires. So I will keep sending him samples and he will sneak them in all clandestine like - so more cool images to come, ha!
Renegade science is so much fun!
aqsolutions.org
The images just below are of charcoal made from longan wood (Dimocarpus longan). There are loads of these of these fruit trees throughout southern China, southeast Asia and the region around Pun Pun Farm. They grow them from layering and the trees never develop a strong tap root. So they have to prop the limbs up or the trees will blow over in a storm. And they have to prune them often - so it's very common to make charcoal from the prunings.

You can really see the macropore structure in some of these shots (note the scale bars at the bottom of each image...a "um" is a micro-meter, 10^-6 meter, or 1/1000 of a millimeter, for those not conversant in scientific notation).
This charcoal is made from coconut husk. It was not the best kind of coconut to made charcoal from - the thin hard shells of young coconuts. Probably charcoal made from the thick, woody shells of mature coconuts, and/or the coir would be better for our purposes. But this stuff does show some interesting surface morphology.

We would have to use TEM (transmission electron microscopy) to see the smallest pores, at the molecular scale (1 millionth of a millimeter and smaller). Then we'd actually be looking at the crystalline structure of the charcoals - that would be totally sick. But these SEM (scanning EM) images are good for getting a since of how porous charcoal materials are at the micro-level. So you can see how a couple tablespoons of this stuff can have the surface area - at the molecular level - of a football field. Plenty of space, in other words, to adsorb contaminants like nasssty pesticides!
Below is charcoal made from rice husks. It's an interesting material, but probably not very good for water filtration purposes because of its naturally high ash content from all the silica and minerals that make up the husk. Also, rice husk charcoal is not made in a kiln - husks are just piled onto a fire and allowed to smolder. So the pyrolysis is pretty low temperature, and oxygen is not well excluded - thus it doesn't develop awesome porosity/surface area and so is not a great water filtration charcoal.
But still interesting to look at in SEM - in the image, the husk on the left shows the underside, on the right the outer side of the husk. Cool eh? Very different morphology inside and out!

I had a great chat the other day with my man the electron-microscopy ninja when he brought me these images. (He snuck our samples in between runs of "official" work.) I told him about the project and our efforts to design simple/cheap systems for drinking water purification and he is down like 4 flat tires. So I will keep sending him samples and he will sneak them in all clandestine like - so more cool images to come, ha!
Renegade science is so much fun!
aqsolutions.org
Global Freshwater Scarcity
Interesting article from the August Scientific American on Facing the Freshwater Crisis
Graphic showing the possible influences of population growth and climate change on water scarcity:
Graphic showing the possible influences of population growth and climate change on water scarcity:
Wednesday, August 27, 2008
State of Our Soils
Excellent article in the Sept. '08 National Geographic Magazine on the state of the world's agricultural soils: Our Good Earth - The future rests on the soil beneath our feet
Photo showing loss of topsoil in New Mexico from only a few decades of bad farming practices.
Photo showing loss of topsoil in New Mexico from only a few decades of bad farming practices.
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