Now, the usual advice about food is that local is better,
but distant is cheaper. For the environment, it really depends on what food you
are growing. Citrus grows very well here, but tomatoes need so much water that it
is better for the world to ship them in from California, with all of the gas
guzzling that includes.
What foods are the best in Tucson? Well, edible cacti are
already adapted to the Sonoran Desert. Peppers are fine too. Olives need months
of preparation before you can eat them, but a pomegranate does not. Citrus
trees need help from humans to grow here, but they are certainly better than
tomatoes, which need much more water.
If you want an excellent symbol for sustainability then just
look to the chicken. Chickens eat food scraps, weeds, and insects and then produce
eggs, a perfect protein. Keeping backyard chickens is a relationship that is
easy to sustain for years and decades.
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