From Stewart Brand’s Long Now Blog:

That would mean the following. (Here I’m drawing on notes and extrapolations I’ve written up previously from discussion with Griffith):

“Two terawatts of photovoltaic would require installing 100 square meters of 15-percent-efficient solar cells every second, second after second, for the next 25 years. (That’s about 1,200 square miles of solar cells a year, times 25 equals 30,000 square miles of photovoltaic cells.) Two terawatts of solar thermal? If it’s 30 percent efficient all told, we’ll need 50 square meters of highly reflective mirrors every second. (Some 600 square miles a year, times 25.) Half a terawatt of biofuels? Something like one Olympic swimming pools of genetically engineered algae, installed every second. (About 15,250 square miles a year, times 25.) Two terawatts of wind? That’s a 300-foot-diameter wind turbine every 5 minutes. (Install 105,000 turbines a year in good wind locations, times 25.) Two terawatts of geothermal? Build 3 100-megawatt steam turbines every day-1,095 a year, times 25. Three terawatts of new nuclear? That’s a 3-reactor, 3-gigawatt plant every week-52 a year, times 25.”

All of it! Please listen to Saul’s Long Now Lecture to hear how, despite the odds, he remains an optimist.

Calculate and compare your own power consumption at WattzOn.com.

Check out the very cool 100 mpg, charge-overnight-from-a-wall-socket, ready-for-the-carpool-lane, 3-wheeled (California only) Aptera.
(As mentioned in Saul’s talk.)

See also: Google PowerMeter is currently being tested by employees and is not yet available to the public.

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Dean Kamen, inventor and entrepreneur, has pieced together a hybrid that uses electric battery power for the drive train, and a Stirling engine for heat and defogging. In a pinch, the Stirling engine can also be used to recharge the battery. Read the whole story at UnionLeader.com (See Also: Dean Kamen’s Deka Revolt Electric Car Runs on Any Fuel.

And check out this TedTalk from 2002. Kamen discusses the Stirling engine and it’s applications for water purifying and power production in poverty zones.
Dean Kamen: Rolling along, helping students and the third world.mp3

And here’s a Kamen TedTalk video where he discusses development of a prosthetic arm/hand that can pick up a raisin.

See Also: Esquire’s How Dean Kamen’s Magical Water Machine Could Save the World.
See Also: Telegraph’s Dean Kamen: part man, part machine.

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http://mazamascience.com/OilExport/index.html

http://mazamascience.com/OilExport/index.html

from CoastToCoastAm site

Next, author Robert Zubrin warned that the OPEC cartel wants to crash the American economy and then “buy out the wreckage.” He argued for a flex fuel mandate (so that cars will run on both gasoline and alcohol) and said that increased ethanol production is not related to food shortages. 500 million acres of US farmland are not being utilized, and we have tremendous capacity to expand production, he commented.

http://www.coasttocoastam.com/shows/2008/04/29.html#recap

How much Virtual Water is in your shirt?

Virtual Water is a measure of all the water it takes to make the products you use. Waterfootprint.orgcalculates that a new cotton shirt uses 2,700 liters. That’s a tally of the water evaporated in irrigating and growing the cotton, and the water needed to wash away the fertilizers and dilute the chemicals used in the manufacturing process. With worldwide water shortages set to become a major humanitarian crisis this century, water waste is a serious new sin. Read More…

http://themoment.blogs.nytimes.com/

Intensive crop culture for high population is unsustainable

I am convinced that we begin unsustainable resource depletion (overshoot) as soon as we use (and become dependent upon) the first unit of any non-renewable resource or renewable resource used unsustainably whose further use becomes essential to the functioning of society, such as:

THE FIRST TONNE OF COAL
THE FIRST LITRE OF OIL
THE FIRST KILOGRAM OF FISSIONABLE URANIUM
THE FIRST BARREL OF FOSSIL WATER FOR IRRIGATION — and
THE FIRST HECTARE OF FORMERLY NUTRIENT CONSERVATIVE NATIVE FOREST or GRASSLAND/PRAIRIE PLOWED

This last category of unsustainable renewable resource depletion (excessive leaching/export of plant nutrients from arable soils associated with most agricultural practice, and more recently also with harvesting of nutrient-rich forest biomass) has been looming over us, unseen, for 10,000 years. We can expect that it will catch up with us shortly because most of us are dependent on foodstuffs produced by unsustainable farming, and fiber produced by unsustainable forestry.

http://www.culturechange.org/cms/index.php?option=com_content&task=view&id=154&Itemid=1

Unsustainable soil mining: past, present and future

http://www.culturechange.org/cms/index.php?option=com_content&task=view&id=155&Itemid=1

Culture Change mailing address: P.O. Box 4347, Arcata , California 95518 USA, Telephone 1-215-243-3144 (and fax).

Culture Change was founded by Sustainable Energy Institute (formerly Fossil Fuels Policy Action), a nonprofit organization.

from Juergen Schmidhuber’s site

Since age 15 or so Prof. Jürgen Schmidhuber’s main scientific ambition has been to build an optimal scientist, then retire. In 2028 they will force him to retire anyway. By then he shall be able to buy hardware providing more raw computing power than his brain

Their Haber-Bosch process has often been called the most important invention of the 20th century (e.g., V. Smil, Nature, July 29 1999, p 415) as it “detonated the population explosion,” driving the world’s population from 1.6 billion in 1900 to 6 billion in 2000.

Haber-Bosch process:

Under high temperatures and very high pressures, hydrogen and nitrogen (from thin air) are combined to produce ammonia.

Nearly one century after its invention, the process is still applied all over the world to produce 500 million tons of artificial fertilizer per year. 1% of the world’s energy supply is used for it (Science 297(1654), Sep 2002); it still sustains roughly 40% of the population (M. D. Fryzuk, Nature 427, p 498, 5 Feb 2004).

http://www.idsia.ch/~juergen/worldpopgrowth1.jpg

http://www.idsia.ch/~juergen/

tags needed

[kml_flashembed movie="http://www.youtube.com/v/laPU0bS8JOc" width="425" height="350" wmode="transparent" /]

Erowid Conference Report: Mind States Costa Rica by Lux, Erowid Staff Writer

v1 – Jul 18, 2007

sample from Jon Ott-

“The End of the Treasure in the Basement”, by Jonathan Ott

Jonathan described himself as “not a prophet”, but someone who has been interested in the question of energy and the petroleum-based political and economic infrastructure of the industrialized world since the 1970s. He’s surprised that the infrastructure has held itself together as long as it has.

Most known organisms derive their energy from the sun, which was properly regarded by many religious cultures as the origin of life.

….

Since 1979 the amount of energy per capita has decreased, and more people have no access to energy and water every year. We’re starting over the hill and soon it will be a cliff. This is important because energy equals life, in a literal and direct equation. What Hubbard pointed out was the disparity between the natural ecology of energy and the economic system of the world.

So we start looking to alternatives to oil, coal, natural gas, and wood. Take nuclear energy � it is highly efficient in generating electrical power, but it requires a huge investment of energy to operate. Nuclear power plants must have their own power plant to run, and it may be the case that nuclear power does not even generate net energy.

Fusion reactors are too little, too late. A best-case scenario is production of fusion power in 2050, and that’s way too late.

There are currently four countries that have not yet reached their peak. Jonathan predicts that within 30 years the wheels will come off the global economy. Perhaps as soon as 20, but definitely by 30.

Jonathan’s response to this situation has been to create a self-sufficient solar and water power supply that powers his lights, a short-range electric car, and his basic needs. He’s beginning to generate all of his own food in a sustainable little farm as well, and his hope is to live to see the day when everything comes unglued so he can see what happens.

http://erowid.org/general/conferences/conference_mindstates7.shtml

Ott is one of my favourite writers and  theoreticians.

Author of (Books)

http://www.erowid.org/library/books/images/age_of_entheogens.jpg

This is a mind-blowing book, especially the Angel’s Dictionary!

Peak Phosphorus

Posted by Prof. Goose on August 17, 2007 – 10:00am
Topic: Alternative energy
Tags: agriculture, depletion, hubbert linearization, phosphorus, recycling

This is a guest post by Patrick Déry and Bart Anderson. Patrick Déry is a physicist, energy, agriculture and environment analyst and consultant in Quebec, Canada. Bart Anderson is a former reporter, teacher and technical writer; he currently is co-editor of Energy Bulletin. Peak oil has made us aware that many of the resources on which civilization depends are limited.
But oil production is not the whole story. Nutrients like nitrogen and phosphorus were also required for the “Green Revolution”.

Nitrogen is present in large quantity in the atmosphere (78% of its composition). The Haber-Bosch process for obtaining nitrogen uses one percent of all energy consumed by humans [5]. Nitrogen can also be fixed in the soil using micro-organisms such as rhizobium and azotobacters. If there is sufficient energy, nitrogen will be available.

Phosphorus may be the real bottleneck of agriculture. [6]

Population growth was only possible because we found phosphorus deposits and cheap energy to extract, transform and transport it to farms. When we plot data of world population versus world phosphate production, we find a significant correlation.

What does this correlation mean? Even if we find a real substitute for fossil fuels, it will be impossible to maintain population growth because phosphate deposits are probably in decline. It will be impossible to maintain an agriculture without recycling nutrients.
http://www.theoildrum.com/node/2882