Sustainability and Limits to Growth
Human beings and the natural world are on a collision course. Human activities
inflict harsh and often irreversible damage on the environment and on critical
resources. If not checked, many of our current practices put at serious risk the
future that we wish for human society and the plant and animal kingdoms, and
may so alter the living world that it will be unable to sustain life in the manner
that we know.
Fundamental changes are urgent if we are to avoid the collision our
present course will bring about. we are fast approaching many of the earth’s
limits. Current economic practices which damage the environment, in both
developed and underdeveloped nations, cannot be continued without the risk that
vital global systems will be damaged beyond repair. Pressures resulting from
unrestrained population growth put demands on the natural world that can
overwhelm any efforts to achieve a sustainable future.
If we are to halt the destruction of our environment, we must accept limits to that growth. —Union of
Concerned Scientists (UCS),World Scientists’ Warning to Humanity, issued on
November 18, 1992, and signed by some 1,700 of the world’s leading
scientists, including a majority of the living Nobel laureates in the sciences
In the early 1970s, a team of young scientists from MIT spent 2 years developing and working
with a world computer simulation program called “World3.” They included a multitude of
variables in their computer model in an effort to make its output match the real world as nearly
as possible.