Unformatted text preview: se inputs equal outputs. Sustainability is a balance between supply and demand, between production and
consumption. When the amount of resources we consume equals the amount we produce, we are “net zero.”
For example, a home is sustainable if it consumes no more resources than it produces, i.e., it is net zero for
energy, water, and food.
To achieve sustainability, we must not only achieve a balance between supply and demand (inflows and
outflows), but also decrease the waste produced so as not to exceed the waste absorption capacity of the
environment. Thus, we must also apply the “net zero” concept to waste and strive to produce zero waste. We
must produce as much resource as we consume, and we must consume as much waste as we produce. We can
consume waste by treating it as a resource and finding ways to use it.
In a sustainable state, resources such as food or water are always available. Thus, a sustainable state is
also the state of minimum risk to current and future generations. Sustainable living reduces insecurity for
individuals and their offspring. We can never eliminate insecurity, but we can greatly reduce it by reducing...
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- Fall '14
- John C. Ayers