All Things Considered host Linda Wertheimer visits Camp Sundown in New York's Hudson River Valley. It's for kids who have a rare skin disease called Xeroderma Pigmentosum or XP. The disease makes any exposure to sunlight or ultraviolet rays deadly. So these kids fish, ride horses, play games all night and sleep during the day. Dan and Caren Maher of Poughkeepsie started the camp three summers ago. Their six-year-old, Katie, has XP. They say they wanted Katie to have a chance to go outside and play with other children for a few weeks of her life. There is no cure yet for XP, which destroys the body's ability to restore skin cells. You can find out more by visiting the Xeroderma Pigmentosum Society Web site.