What's It All Mean?
By Magazine Editors | From Preservation | March/April 2009
Carbon footprint: The effect of human activities on the environment, in terms of greenhouse gases produced, expressed in units of carbon dioxide.
Embodied energy: The total amount of energy needed to manufacture a material or product, transport it to the point of use, and use it.
Greenhouse gases: Gases that trap heat in the atmosphere. The principal greenhouse gases that result from human activities are carbon dioxide (released when fossil fuels such as oil and coal are burned), methane (emitted during the production and transport of coal and natural gas, and from solid waste landfills), nitrous oxide (released by agriculture and industry), and fluorinated gases (emitted by industry).
LEED: Leadership in Energy and Environmental Design, a rating system developed by the U.S. Green Building Council to provide standards for environmentally responsible construction. Read more about LEED
Sustainability: Meeting the needs of the present without compromising the ability of future generations to meet their own needs.
For more photos, stories, and tips, subscribe to the print edition of Preservation magazine.