Or I should say people in persistent vegetative states, but coma fits better in the headline. Regardless, that’s not the interesting part. From the Guardian :

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