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Greenhouse & Nuclear Effects

by williamshepherd @ 2006-06-12 - 13:13:39

first published as weblog one hundred and sixty two on Sunday 11th June 2006

My Curriculum Vitae has an entry for ‘Wheelock College, Boston, USA, 1981-1985’ that reads: 1981 Assistant Professor of Education teaching Organisational Development; 1983 Co-Founder and Tutor-in-Residence of Human Scale Institute on Martha’s Vineyard; 1985 Publication of The Ecology of Learning course for teachers and professional educators’. The summer campus for the Human Scale Institute was at Anna Edey’s Solviva Gardens.

Anna Edey was born and raised in Sweden and moved to the USA in 1957 where she raised three daughters and built herself a career on Martha’s Vineyard dyeing and weaving wool from her own sheep and Angora rabbits before the gods took her under their wings and set her to work weaving a web of life. Here is Anna in Growing Edge Magazine.

‘At four o’clock in the morning on the coldest night of 1984, I am awakened by the howling blizzard. To my utter surprise, inside the greenhouse it’s like a balmy night in June. The thermometer reads 13 Celsius. The Angora rabbits are quietly muffling about in their communal dens. Moon and stars shine brilliantly through the four layers of clear glazing. Here among the tall, lush tomato vines loaded with red sweet tomatoes the thermometer reads 7 degrees. I proceed toward the east end, scooping up deep comforting breaths of humid, mild air fragrant with nasturtium, thyme, sage, dill and living earth. At the far end a hundred chickens acknowledge me with sleepy murmurs, cozy at 21 degrees in their spacious quarters’. The insulation comes from the still air between the layers of glazing.

A greenhouse is a hot and sticky place. Light from the sun is absorbed by the dark plants and partially re-radiated as infrared radiation. Not much escapes because glass blocks radiation at the infrared end of the spectrum. This is the Greenhouse Effect and the Earth is a greenhouse…for dark green plants read the planet’s surface and for the glass read the earth’s atmosphere.

There are two problems with this analogy. The earth’s atmosphere does not behave like glass and although the Amazon Rain Forest may be dark green the polar ice caps are not, much of the planet’s land surface is desert and semi-savannah and almost three quarters of the earth’s surface is ocean. We are told that 99% of the earth’s atmosphere has no insulating properties, that oxygen and nitrogen have no role and that carbon dioxide alone keeps the earth warm enough for life. Why do we allow ourselves to believe this nonsense?

Nuclear power plants generate steam that turns turbines to produce electricity. So the nuclear debate is not a debate about energy needs but about electricity supply. Electricity accounts for 18 per cent of total energy used in the United Kingdom and nuclear power stations contribute 19 per cent of this….falling to 7 per cent by 2020 as reactors are switched off before they get so old that they break apart from corrosion and spew radioactivity into the atmosphere.

So that’s 3.4% falling to 1.3% of the country’s energy requirements. The Channel Tunnel cables can cope. So what’s all the shouting about? My mind has started to have uncharitable thoughts about the perfidious French and the dastardly Germans. They are up to something and Brits are the fall guys. My headline would be Blair Duped Again.

First the Texans and the Israelis take him for a ride over the Iraq Invasion. Now the European Bank is trying to get its two biggest clients off the hook by flogging Blair a dead nuclear horse. Nuclear power is an archaic technology for goodness sake. It’s more than 50 years old. It has no more place in a modern economy than a horse and cart. Blair must go urgently. He is dangerous to our health. This latest love-in could be the death throes of President Blair.

Renewable forms of energy are almost limitless in their potential. They are flexible and offer good security of supply. Nuclear, by contrast, requires uranium to be mined and transported, produces toxic waste and poses a potential terrorist threat. No one has the foggiest idea of the cost of new nukes, new designs will have to be imported…so much for freedom from foreign control of our energy supplies…and the Ministry of Truth will have to control the whole of Government if real economic appraisals of actual past and future reactor costs are to be kept as state secrets.

The real opportunity is not renewable technologies but local energy. All the energy we need for a year arrives in half an hour of sunlight…the rest is complications. Cross-channel cables for Surplus French Nuclear Electricity (SFNE) and a gas pipeline from Norway are all the Energy Insurance this country will be needing. All our national utility grids can be dismantled. The English have no need of them. Over the past 14 years Woking Borough Council has reduced energy demand by 50% and made savings of 77% in carbon emissions through green procurement, basic energy conservation, community use of combined heat and power, biomass, photovoltaics and fuel cells. The Woking Strategy is the way forward. Tackle energy locally…town by town, village by village and parish by parish.

Disregard private interests…the personal and the community sectors are more efficient…when working in tandem locally. Get Energy Supply Pricing right…talk to the Danes…and include utilities in your local tax calculations. The job of central government is to stop private interests getting in the way of local investments and to enable local development strategies by shutting down private utilities…tax them ‘til their pips squeak…and phasing out Whitehall and County Council budgets over a single parliament. This is the Labour Party’s back-to-basics way to renewal.

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