Some hearts are round, others more elongated, and as it turns out, these differences aren't just simple curiosities; they ...

A new, multinational study has revealed that the shape of the human heart, influenced by genetic factors, could serve as a ...

A groundbreaking multi-national study has revealed that the shape of the human heart, influenced by genetic factors, could ...

and their “large” tongues are “heart shaped.” Photos show the various brown shades of the new species. These tree frogs can ...