The elementary school was built of makeshift materials and had no running water or electricity.

CNN: 'I couldn't just cross my arms and turn away'

Commerce does this by endeavoring to consider all of the factors of production necessary to make the product (the various materials, labor, electricity, water, and other overhead) and valuing those inputs by reference to their prices in another country.

FORBES: President Obama's Chance to Fix Deteriorating Economic Relations with China

All sources of energy and electricity require water in their production processes: the extraction of raw materials, cooling in thermal processes, in cleaning processes, cultivation of crops for biofuels, and powering turbines to generate hydroelectricity.

UNESCO: CULTURE

Nevada's first platinum-certified LEED (Leadership in Energy and Environmental Design) buildings stand proudly here, constructed of recycled materials and rammed-earth walls, with passive cooling, renewable heating, reclaimed water and solar-electricity panels, all harvesting clean energy.

BBC: Discover life in the Nevada desert