Global water supply and consumption are unequal. The demand for water is increasing and water is not always available. Water insecurity is a big issue in some parts of the world.

Various strategies have been employed to make water available to more people, through water transfers and the construction of dams and reservoirs. Water sustainability is a global concern.

Global energy supply and consumption are unequal. There's a need to manage energy supplies and there are strategies that can be put in place to achieve this. Energy sustainability is a global concern.