When temperatures soar, so do heart attacks. Now, a lab experiment explains just how temperatures climbing into Fahrenheit’s three-digits can cause ischemia and potential heart attacks ...

Sometimes, when I was watching various artificial heart experiments in the basement of the Texas Heart Institute, I wondered if I was experiencing something akin to Thomas Edison’s housekeeper.

The fish swim bladder is an organ that aids fish in floating in water and is composed of collagen, glycosaminoglycans, and elastin, closely resembling parts of the human heart. Experiments ...

The experiments announced Tuesday come after a historic but failed attempt earlier this year to use a pig's heart to save a dying Maryland man – sort of a rehearsal before scientists try again ...