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Climate Change: Our Responsibility

If global warming cycles are natural phenomena, why should humans alter their consumption habits and behavior? Have we really accelerated climate change? This program studies the causes of ozone depletion and the buildup of greenhouse gases—examining both sides of the highly politicized issue while making the case that current warming trends are in fact human-caused. Outlining the importance of the greenhouse effect for life on Earth, the video looks at recent, measurable changes in sub-climates like Bangladesh and Australia; illustrates the roles played by agriculture, deforestation, and pollution; and features interviews with proponents and skeptics of mainstream arguments. Viewable/printable educational resources are available online. (25 minutes)

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Climate: Greenhouse Effect
Climatic variations over centuries and millenia have always occurred. Popular opinion, however, is that humans are contributing to global warming. Sunlight radiated from Earth is trapped by greenhouse gases and radiated back to Earth.