This tool allows you to calculate your contribution to greenhouse gasses by answering questions about lifestyle and behavior. A kids' version is also available. The calculator is intended for adults but is quite applicable to teenagers, especially those who drive a car. This site also includes ways to "offset" carbon emissions through tree planting, etc. Some of the information is part of initiatives for which the organization solicits funds, but the research and data are informative and sobering.

This resource was featured in a recent New Teacher Hotline Podcast as one of the Tech Toolbox resources. Hear more about it on the podcast .
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