Gardens turning grey

1.
a. When does a garden turn grey?
b. Read this if you want to feed your curiosity.
c. Besides using grey water to water their gardens, what else are the Australians doing to save water?

2. Over to you
a. What do you usually do to save water?
b. How far do you agree that water is a common good? Have a look at this for further information.

And don't forget to use the Forum to express your opinions. Thanks.