Ecological Footprint (from David Orr, Ecological Design, 2002)
- Land required to grow our food, process our organic wastes, sequester
our carbon dioxide, provide for our material needs, etc.
- Average North American, requires 5 hectares (= 200x300 yards)
arable land per person per year
- 1 hectare = 2.5 acres, 1 acre = 50x100 yards
- At current population levels, world has only 1.2 (4.5?) hectares of
useable land per person
- Extending our lifestyle to everyone would require equivalent of two
additional earths.
- For assessing your own ecological footprint, see https://www.myfootprint.org/en