Michael Schumacher is "making progress" and "showing moments of consciousness and awakening," his agent has said.
The racing driver, who suffered a severe head injury while skiing off-piste in the resort of Meribel in France last December, remains in an artificially induced coma.
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Andrew Nay smashed into a family's car with his 4x4 during a road rage chase leaving two young sisters paralysed, a court heard.
Susan Whiting was attacked with a blunt object at the couple's bungalow, wrapped in a shower curtain, and hidden under a bed.
Teenager TJ Khayatan carried out the prank at the San Francisco Museum of Modern Art - and later posted the results on Twitter.