1. A carbon footprint is a measure of the amount of carbon dioxide (CO2) emitted through the combustion of fossil fuels. A carbon footprint is often expressed as tons of carbon dioxide or tons of carbon emitted, usually on a yearly basis. Building-related activities that affect the carbon footprint of a building include electricity use, if provided by nonrenewable resources; home heating use; and the amount of food bought from nonlocal sources. (Source: Wikipedia.)

2. Food security can be defined as "access by all people at all times to enough food for an active, healthy life. Food security includes at a minimum: (1) ready availability of nutritionally adequate and safe foods, and (2) an assured ability to acquire acceptable foods in socially acceptable ways" (source: USDA,

3. A charrette is an intensive workshop that involves all team members, lasts from three to fours hours to a day or more, and aims to create a clear vision for how the project will be developed, including how the green building elements will be incorporated.

4.The process of ensuring that systems are designed, installed, functionally tested, and capable of being operated and maintained to perform in conformity with the owner's project requirements (source: LEED NC version 2.2 reference guide). Commissioning assists in the delivery of a project that provides a safe and healthful facility; improves energy performance; optimizes energy use; reduces operating costs; ensures adequate O&M staff orientation and training; and improves installed building systems documentation. A new guideline, Guideline 0-2005, The Commissioning Process, from the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) describes how to verify that a facility and its systems meet the owner's project requirements. Those requirements also define sustainable development goals and how the building will function before designers begin the design process. To keep costs at a minimum, the design team must understand what they are tasked with accomplishing, which is provided by the requirements (source:

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Guide to Alternative Fuels

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