Adding artificial feedback to a simple aquatic ecosystem: the cybernetic nature of ecosystems revisited

Article Abstract:

The article describes an experiment in which an artificial feedback loop was used to study aquatic plant respiration and production. The feedback loop consisted of a computerized light source that would turn on and off based on assigned levels of respiration and production. Poor links between respiration and productivity and similarities in energy demand support a holistic, or cybernetic, approach to ecosystems.

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The new and improved arms race

Article Abstract:

An overview is presented on the demonstration against the National Missile Defense test launch held on July 7, 2000. The article chronicles the planning needed to get past launch site security; protestors who placed themselves directly on the launch site were arrested, but the launch was completed despite the presence of other protestors within the hazard zone.

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Renewed interest: President Bush's promotion of fossil fuels has had the ironic effect of bringing new focus to renewable energy

Article Abstract:

The article examines the grassroots backlash against George W. Bush's national energy policy, which is heavily reliant on fossil fuel consumption. Discussion focuses on increased political activity among college students, who promote alternatives such as solar power, wind energy, and fuel cells.

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