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In this environmental science lesson, learners will examine the dangers of mercury and how humans contribute to growing mercury emissions on Earth.

In this activity, learners explore the engineering design process (EDP)—the process engineers use to solve design challenges.

In this environmental science lesson, learners will examine hazardous chemicals and their effects on human health and the environment.

This experiment allows learners to experience a small scale "epidemic," demonstrating the ease with which disease organisms are spread, and enables learners to determine the originator of the "epidemi