The previously whiter-than-white Disney star was treated in rehab for "emotional and physical issues" in November 2010, following her attack on a dancer while on tour with The Jonas Brothers.
Demi was admitted to the Michigan rehab facility shortly after she punched a female performer while travelling on tour.
Since leaving rehab in January 2011, the star has had the words stay strong' tattooed onto her wrists as an encouragement.
The rounded sleeping capsules send guests drifting into ocean before arriving on desert island by morning.
Sitting on the saddle activates the part of the brain responsible for learning, a study has claimed.
Scientists are appealing for more people to donate their brains for research after they die.
Life on Earth may have arrived from Mars on an asteroid, scientists have claimed.
Lunar mission scheduled at the end of 2017 could find out if beer can be brewed on the moon.
A bottle used to teach children how far litter can travel ended up on Scottish beach after 8,700-mile journey.
Confused Apple customers are finding coins in their MacBooks.
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