Filters: Your search found 3 results.
Topics/Subjects:
Earth's energy budget  
Learning Time:
1 to 4 weeks  
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Since the Industrial Revolution, atmospheric carbon dioxide concentration has risen from ~280ppm (parts per million by volume) to ~390ppm in 2010. The rate of increase for the last decade (2001-2010) has been 2.04ppm/yr, more than double the rate... (View More)

In this problem-based learning unit, learners analyze the role of condensation trails from jets, or contrails, and their role in climate change. Contrails are thin ice clouds that form from the burning of jet fuel and release of water vapor. The... (View More)

In this problem-based learning unit, students learn about the causes and impacts of urban heat islands. Numerous studies have shown how concrete pavements and buildings retain heat in cities, making cities several degrees warmer than the surrounding... (View More)

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