General Knowledgespeaking topic
Glass bottle or plastic? Glass recycles in an endless loop but is heavy to transport and carbon-costly; plastic is light but sheds microplastics. When you run the full life cycle assessment, which one wins, and why?
— life cycle assessment (LCA), environmental impact of packaging
practice with this topic
Set the timer (5-30 min), take 20 seconds of prep if you like, start talking. Jot your thoughts onto the sticky-note board.
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