water is the natural resource where we can most clearly see the interconnectedness of systems-- as children we learn rain comes down, fills our groundwater reserves, rivers, and gutters, evaporates
from lakes and oceans, gets stored in clouds, only to reappear in the form of rain or snow.

Water is also not something found out there in the environment, external to us: our own bodies are 50-60% water, 70% for babies.
- Annie Leonard, The Story of Stuff