Wearables, which use photo sensors and accelerometers, generally overestimate sleep stages by misclassifying wake stages.

Benjamin Rush State Park is that unexpected oasis, hiding in plain sight like a $20 bill in your winter coat pocket. In a city known for its cheesesteaks and Rocky steps, this verdant treasure offers ...

In this look back at the singer Selena, the director Isabel Castro presents home video footage and photographs that have not been seen in other documentaries. By Chris Azzopardi The film chronicles ...

The Powerful Owl, Ninox strenua, is Australia's largest and most powerful owl. It's also the only owl in Australia that hoots like the owls in children's books - "whoo hoo" - rather than screeching ...

Yahoo Sports TVyahoosports.tv is here! Watch live shows and highlights 24/7. Yahoo Sports DailyJason Fitz & Caroline Fenton bring you the top sports news to start your day. Yahoo Fantasy ...