Re: [ba-unrev-talk] Agroforestry
Remember, Eric, from the second Colloquium session that the total annual
oil consumption of the world was a mere one cubic mile? (01)
Eric Armstrong wrote: (03)
> Henry K van Eyken wrote:
> > 1 acre = 4.05 x 10^-3 sq.km
> Great. Now, for those of us who knew math about 30 years ago,
> but who have in the meantime forgotten everything they once
> knew, what is that number, really??!
> .00405 sq. km ??
> That seems awfully small.
> I know that 10 km = 6.2 miles. But I don't know how miles and
> acres relate, either, so that doesn't help much.
> That 1.25 acres:
> * Can provide all of the nutritional needs for 10 people.
> * Is very water-sparing, rather than water-intense.
> * Is very labor-sparing, rather than labor-intense.
> * Lets those 10 people live on the land, as well as birds
> and other forms of wildlife.
> * Puts oxygen back in the air and takes CO2 out.
> * Can provide housing materials and export crops.
> * Can make use of mountainous terrain at most every
> latitude, as well as flat land in certain latitudes. (04)