US Environmental Protection Agency (EPA)
The federal agency charged with protecting the environment.
A shift in global temperatures.
Rising average temperatures.
A 1997 treaty that sought to reduce emissions of greenhouse gases.
Emissions primarily carbon dioxide but also other gases such as methane that are believed to contribute to global warming.
A naturally occurring gas, the prevalence of which is increased by the burning of fossil fuels.
Clean air act
The law, initially enacted in 1970, that provides authority for federal regulation of air population.
Greenhouse gases released by cars and other vehicles.
A type of air pollution; the word was constructed by combining smoke and fog.
Vehicle miles traveled (VMT)
How many miles each individual car is driven; an increasingly important measure of auto use.
Cap and trade
A system for limiting pollution by assigning allowances to polluters, which can sell their excess permits if they succeed in reducing their emissions.
Power generated by natural sources that can be replenished, such as wind and solar energy, as opposed to nonrenewable fossil fuels.
The rapid growth of a metropolitan area, typically as a result of specific types of zoning and development.
A design movement that seeks to promote walkable communities through transit-oriented, mixed-use development.
Regulations that control how land can be used.
Rules regarding the standards for structures; they mainly have to do with safety issues, but sometimes also include requirements for things like exterior pedestrian walkways.
Protecting buildings from the elements (for example by installing insulation); also designed to cut down on energy use.
Occupations that contribute to environmental sustainability.
Taking steps to prepare for and deal with the effects of climate change.
Reducing emissions of greenhouse gases and other steps taken to curb the forces that cause climate change.