Historyspeaking topic
The lead water pipes of the Roman Empire may have slowly poisoned its people; some historians even argue this contributed to the empire's fall. If what destroyed a civilization was not barbarian armies but the water it quietly drank, which of our own 'harmless' daily habits should we be rethinking?
— The debate over lead poisoning in Rome
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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