When our cameras inevitably emerged from our purses to capture the moment, our young guide quickly placed his glass of Efes on the ground under the table.

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They take you inside through a tunnel that smells of ozone and let you look through glass windows at giant, whirring generators while the guide unfurls the mysteries of turbines and transformers for the rapt crowd.

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To start exploring the wide range of audio now on Flipboard, a new "Audio" category has been added to the Content Guide, which opens when a user taps on the red ribbon or magnifying glass in the top right corner of their Flipboard.

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