Qu’est-ce qu’on mange demain ?

Posts Tagged ‘environnement’

It’s Time To Drink Toilet Water

Posted by BigBalzac sur janvier 28, 2008

Recycling sewage is safe and efficient, so why aren’t we doing it?

Officials in Orange County, Calif., will attend opening ceremonies
today for the world’s largest water-purification project, among the
first « toilet-to-tap » systems in America. The Groundwater Replenishment System
is designed to take sewage water straight from bathrooms in places like
Costa Mesa, Fullerton, and Newport Beach and—after an initial cleansing
treatment—send it through $490 million worth of pipes, filters, and
tanks for purification. The water then flows into lakes in nearby
Anaheim, where it seeps through clay, sand, and rock into aquifers in
the groundwater basin. Months later, it will travel back into the homes
of half a million Orange County residents, through their kitchen taps
and showerheads. Lire le reste de cette entrée »


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Soft Landing – Richard Heinberg responds

Posted by BigBalzac sur janvier 13, 2008

SO FAR THE three of us seem to be in general agreement. So let me propose an idea that may be controversial.

would suggest that it is time to make a distinction in the equity
discussion. With regard to ecological space (water and land), we should
aim for rough per-capita equity between and within nations, and for a
reduction of human population to fit Earth’s long-term carrying
capacity. With regard to fossil fuels, we should aim for equal rates of
reduction in consumption rather than equal rates of consumption.

desire for equity in access to ecological space is ethically
incontrovertible – even if its fulfilment seems remote in today’s
world. But the notion of equal decline rates for fossil-fuel
consumption is more problematic. Among climate activists, there are
strong calls for industrialised nations – which have profited
economically from using fossil fuels – to reduce coal, oil and gas
consumption much faster than less industrialised countries, which have
yet to benefit from fuel-based mechanisation.

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Quel est votre indice de consommation?

Posted by BigBalzac sur janvier 11, 2008

Façon inédite d’envisager le facteur humain. J’ai quand même un problème avec ce « facteur 32 ». S’agit-il d’un chiffre moyen ou médian? Si c’est une moyenne, est-ce que ce raisonnement ne peut pas être étendu à l’intérieur même des pays développé (et dans ce cas-là, on n’est pas sorti de l’auberge)?

What’s Your Consumption Factor?

Published: January 2, 2008

Los Angeles

TO mathematicians, 32 is an interesting number: it’s 2 raised to the
fifth power, 2 times 2 times 2 times 2 times 2. To economists, 32 is
even more special, because it measures the difference in lifestyles
between the first world and the developing world. The average rates at
which people consume resources like oil and metals, and produce wastes
like plastics and greenhouse gases, are about 32 times higher in North
America, Western Europe, Japan and Australia than they are in the
developing world. That factor of 32 has big consequences.

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