We have always been told there is no recovery from persistent vegetative state - doctors can only make a sufferer's last days as painless as possible. But is that really the truth? Across three continents, severely brain-damaged patients are awake and talking after taking ... a sleeping pill. And no one is more baffled than the GP who made the breakthrough. Steve Boggan witnesses these 'strange and wonderful' rebirths For three years, Riaan Bolton has lain motionless, his eyes open but unseeing. After a devastating car crash doctors said he would never again see or speak or hear. Now his...