Earth naturally creates carbon dioxide, so how do we know the atmospheric increase is related to humans? The fourth video in a seven-part series explains the evidence that points to humans as a reason for this increase. The factors that affect climate change include increasing emissions, decreasing trees and other habitats to naturally clean the air, and landfill decay.

Concepts

emissions, carbon emissions, climate change, global warming, carbon dioxide, methane

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Additional Tags

science

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Instructional Ideas

• Graph the increase in emissions by country and overall in the world
• Do a visual demonstration of one of the examples in the video; fill a sink with water faster than it can drain and ask what will happen if you continue to add water at this rate

Classroom Considerations

• Assumes prior knowledge of greenhouse gases and the carbon cycle

• This video is hosted on YouTube

Pros

• Includes many graphs supporting the facts
• Mentions the scientists who contributed to the research

Cons

• None

Common Core

RST.6-8.4 RST.9-10.4 RST.11-12.4