Contents of the September/October 1997 issue of Quantum
A special issue devoted to
The World in a Bubble
by Joshua L. Tosteson
Inside the simulated Earth of Biosphere 2 in the Arizona desert, sustainability became a life-or-death issue during Mission One as oxygen levels continued to drop, despite all attempts to manage the chemistry involved.
|Art by Sergey Ivanov|
The software tools used to model the Earth as a whole can also be applied to more discrete problemsin this case, the spread of a disease through a population.
Wassily Leontief harnessed the power of computers to develop what he called inputoutput economics (how economies use resources like iron, coal, and petroleum to produce goods like automobiles and refrigerators). This article describes an effort to harness IO economics to take account of the bads produced by an economy as well as the nonrenewable resources required to sustain it.
A graphical representation of the revised World3 model that appears in Beyond the Limits (the 1991 sequel to The Limits to Growth).
Our contest problem oscillates from simple problems to some challenging graphical and mathematical analysis.
Its the old question: Whats the shortest distance between two points? But in this case, it cant be a straight line!
A challenge for our readers: find the temperature which milk will turn sour twice as fast as it does at 50°F.
Three simple experiments involving boiling water.
The Quantum Bulletin Board.
Scientific crossword puzzle.
Copyright © 1997 National Science Teachers
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