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It's quiet. No cars. No birds. Nothing.' 'No radio waves,' said the Doctor. 'Not even Radio Four.' 'You can hear radio waves?' 'Of course not. Nobody can hear radio waves,' he said unconvincingly.

It's quiet. No cars. No birds. Nothing.' 'No radio waves,' said the Doctor. 'Not even Radio Four.' 'You can hear radio waves?' 'Of course not. Nobody can hear radio waves,' he said unconvincingly.