FDA Warns of Sunscreen Spray's Flammability Risk

SUNDAY, July 21 (HealthDay News) -- Certain sunscreen sprays worn close to an open flame may pose a risk of catching fire, the U.S. Food and Drug Administration warns.

'Female' X Chromosome May Play Part in Sperm Production

SUNDAY, July 21 (HealthDay News) -- Researchers have made the surprising finding that the "female" X chromosome may have an important function in sperm production.