This retinal prosthesis has been implanted in the eyes of 32 patients. The device receives wireless data from the camera which it then translates into electronic signals that are sent to the brain, restoring sight. Courtesy Second Sight Medical Products, Inc. hide caption

toggle caption Courtesy Second Sight Medical Products, Inc.

The Centers for Disease Control and Prevention will decide on Wednesday whether to recommend that boys get vaccinated against the human papilloma virus (HPV). hide caption

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Dr. Jack Wennberg in his Dartmouth office in Lebanon, N.H. John W. Poole / NPR hide caption

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