Sitting in the passenger seat with my headphones plugged in on the second day of a long drive home to Virginia from Maine, I was listening to Janis Joplin’s “Mercedes Benz” and scanning for the latest news on my phone. As we drove south on the New Jersey Turnpike, I scanned Twitter and came across the strikingly sad, although not terribly surprising, news that jazz and R&B singer Amy Winehouse had died in her London home . Initial news reports describe the official cause of death as "unexplained;" the unconfirmed leaks suggest that alcohol, drug use and emphysema may have contributed. Winehouse's struggle with drugs and alcohol had been widely chronicled in the British and American press and the singer's hit song "Rehab" seems, if nothing else, to be autobiographical. Less widely reported, but no less salient, was Winehouse's struggle with bipolar disorder, also known as manic depression. "Amy had battled drink and drugs problems throughout her ...