Fifteen-thousand BCE, long before we had knowledge of what a human heart actually looked like, the earliest known depiction of a modern-day heart symbol was created in Spain within El Pindal Cave.

500 years later, scientists have solved Leonardo da Vinci's human heart mystery. He sketched intricate muscular structures half a millennium ago.

Major step forward in fabricating an artificial heart, fit for a human By recreating the helical structure of heart muscles, researchers improve understanding of how the heart beats Date: July 8 ...