Detecting the faint energy of a human heart beating beneath 10 feet of brick and concrete is a signal-processing feat that almost defies the imagination. Yet that is exactly what rescuers did for four ...

Over the course of just one month in space, engineered human heart tissue got weaker, its ‘beating’ patterns became irregular and it underwent molecular and genetic changes that mimicked the effect of ...

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 ...