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American actor Philip Seymour Hoffman.
The death of actor Philip Seymour Hoffman of an apparent drug overdose was a shock to almost everyone who heard the news. Hoffman, it's been widely reported, had over two decades of sobriety under his belt before relapsing into addiction last year.
We're joined now by journalist Seth Mnookin, the co-director of MIT's Graduate Program in Science Writing, and also a recovering drug addict. He wrote about his experience in a piece for Slate.com.