Thanks to the controversial new technology known as CRISPR, scientists are beginning to make headway in understanding and potentially curing some of the world's most intractable diseases. Sickle-cell anemia, HIV, schizophrenia and autism -- essentially, anything involving bad DNA is now fair game. The latest example, from a study published earlier this month in the journal Molecular Therapy, focuses on Facioscapulohumeral muscular dystrophy, or FSHD, which is one of the most common forms of muscular dystrophy.