On energy use, see
Supply and Demand, a 2008 report from the National Academy of Sciences. Excerpt:
"Given the anticipated growth in every U.S. economic sector and in
demand for all energy sources, it's natural to wonder how that growth
can possibly be sustained. After all, America, with only 5% of the
planet's population, already consumes one-fifth of the world's total
energy. And other countries are poised to experience increases in
energy use as they become more industrialized and improve their
standard of living. Can the United States actually meet its growing
needs?
It remains to be seen. Yet one important factor is working in
our nation's favor. The demand for energy has not been growing as
rapidly as the economy, resulting in a significant drop in what is
called energy intensity. At present, Americans use about half as much
energy per dollar of Gross Domestic Product (GDP) – the total market
value of all the goods and services produced in a country during one
year – as they did in 1970. Were it not for this development, the U.S.
energy bill would be hundreds of billions of dollars per year higher.
Energy-efficiency investments and structural shifts in the economy away
from energy-intensive industry and toward service and
information-based jobs have both contributed to the phenomenon. So have
engineering improvements in scores of systems, from automobile engines
to building insulation to electric power-generating facilities.
This trend is expected to continue. The EIA projects that by
2030 Americans will be using only slightly more energy per capita than
they did in 1980 – but less than half as much per dollar of GDP."
On the environment, see
Air Quality Trends, a report from the EPA. Excerpt:
"Annual emissions estimates are used as one indicator
of the effectiveness of our programs. The graph below shows that
between 1980 and 2013, gross domestic product increased 145 percent,
vehicle miles traveled increased 95 percent, energy consumption
increased 25 percent, and U.S. population grew by 39 percent. During the
same time period, total emissions of the six principal air pollutants
dropped by 62 percent. The graph also shows that between 1980 and 2012,
CO2 emissions increased by 14 percent.
Comparison of Growth Areas and Emissions, 1980-2013 |
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(see the graphic above for 1970-2013)"
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