SUNDAY, Aug. 28 (HealthDay News) -- Although it may sound sweet and friendly, song-sharing among sparrows is actually a hostile behavior, similar to arguing or slinging insults, Canadian scientists have found.

SUNDAY, Aug. 28 (HealthDay News) -- An experimental drug, apixaban (Eliquis), appears better than the old standby warfarin in preventing strokes in people with the abnormal heart rhythm called atrial fibrillation, a new study finds.

SUNDAY, Aug. 28 (HealthDay News) -- Experts at the National Hurricane Center on Sunday downgraded Hurricane Irene to Tropical Storm status, with early reports from New York City showing less damage from the storm than had originally been feared.