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DT ClassroomDesign and Technology studios
CircularLab · Sustainability and the environment

Which design decision cuts the carbon?

Pick a product and see where its carbon footprint comes from: materials, manufacture, transport, use and end of life. Then redesign it for a longer life, recycled content, shorter journeys and easy disassembly, and compare the result per year of use.

Product

Linear product today

Bill of materials (kg)

Your circular redesign

Result

Think first: Which stage is biggest for your product? Which one decision would you change first, and why would that not help a product whose footprint is mostly electricity used at home?

Download

Design sheet

Every factor is a rounded teaching estimate in kg CO2e per kg of material (transport in g per tonne-km). Use the results to compare designs and to see which decisions matter. A real life cycle assessment uses measured data from suppliers.