A model of human DNA is silhouetted against a window in the Sackler Educational Laboratory for Comparative Genomics and Human Origins at the American Museum of Natural History in New York. (Photographer: Daniel Acker/Bloomberg News)

Gene Therapy Was Hailed as a Revolution. Then Came the Bill

(Bloomberg) -- Dozens of revolutionary gene therapies that mend faulty strands of DNA are on their way, bringing the power to eliminate lethal childhood diseases, rare blood disorders and other sev...