Centuries after Leonardo watched a heart beat, a fresh answer is taking shape. A new wave of imaging, genetics, and computation shows that the fine mesh of muscle lining the heart—called ...

“Dogs are not 50-pound humans,” said Dr. John Pippin, a cardiovascular surgeon who previously performed heart attack research ...

As human beings are superior to animals, and as animals instinctively rely on the benevolence, goodwill, and protective nature of man, we must fulfil our obligation to treat our fellow non-human ...