Researchers have reported growing hearts containing human cells in pig embryos for the first time. The embryos survived for 21 days, and in that time their tiny hearts started beating. The findings ...

The heart is the body's hardest-working muscle. Whether you're awake or asleep, or exercising or resting, your heart is always at work. It pumps blood through arteries to deliver oxygen to organs and ...

Police investigate Rep. Nancy Mace 'spectacle' at Charleston airport Exclusive: US businesses are getting throttled by the drop in tourism from Canada: 'I can count the number of Canadian visitors on ...