Pumping Iron: How Dust Can Change the Climate

Center for Science Education, University Corporation for Atmospheric Research

Pumping Iron is a station-based game meant to illustrate the movement of dust throughout different parts of the Earth system and the effects on the climate when iron-rich dust settles into the ocean and stimulates phytoplankton growth, which then leads to the drawdown of carbon dioxide from the atmosphere through photosynthesis. In this game, players collect nutrients that phytoplankton need to live as they follow the dust moving throughout the Earth system - the player with the most nutrients wins!

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Notes from our reviewers

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Consider introducing the "science facts" included in the educator's guide before playing the game. Alternatively, encourage students to ask questions about the cycle and it's relationship to global climate as the game is played. Connecting the dots from this activity to climate change and other nutrient cycles will help to create a deeper and more significant learning experience for students.
This activity introduces students to concepts in nutrient-limitation, and specifically how iron in dust moves through the atmosphere and water cycle to effect phytoplankton growth and the global climate. Students become familiar with how an irregular distribution of nutrients in the ocean can contribute to a spatial and temporal cycle of phytoplankton blooms. Educators should be careful to explain the difference in effect between eutrophication in shallow estuaries versus blown dust in deep ocean waters. Passed initial science review - expert science review pending.
The game is designed for 4-8 people, so may act more as a demonstration for the class rather than an activity everyone can take part in. The game would have significant value if it were included in a unit focused on nutrient cycles, climate change, and the relation between biotic and abiotic systems. A teacher's guide is included with suggestions on how set up the stations and run the activity smoothly. The guide also includes additional information that adds context to the activity.