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In this international citizen science activity, learners measure their night sky brightness and submit their observations into an online database.

In this environmental health activity, learners investigate their own vital lung capacities.

In this environmental health activity, learners investigate their breathing and pulse rates, and learn how these measurements are affected by physical activity.

In this activity (on pages 18-28), learners explore how the shape of seeds affects how they are dispersed by wind, birds, ocean currents and other means.