Tearchers guide on the principles of sustainable development and how to teach them. The past century has brought massive changes to
planet earth. Those born at the beginning of the
twenty first century have inherited a world that is
vastly different from those of their grandparents. As
of November 2008, the human population has soared
to over 6.7 billion people, an incredible number given
that the world population only first reached 3 billion
in 1961. The dramatic increase in population growth
has been accompanied by a rapid rise in the rate of
consumption of the worlds resources, made possible by
new technologies and wealth, particularly in developed
countries.