Scientists have discovered that T cell receptors activate through a hidden spring-like motion that had never been seen before ...

In a Caribbean cave where owls once spat out the bones of their prey, scientists have uncovered a nesting strategy that ...

New data shows Ice Age hunters used Mezhyrich’s mammoth-bone shelters briefly, highlighting adaptations in a volatile, frigid ...

Scientists at Pompeu Fabra University (UPF) have made a great leap forward in predicting the risk of hip fracture among women ...

Fossils can reveal far more than the shapes of ancient creatures. Molecules preserved inside old animal bones provide clues about past diseases, what those animals ate, and the climates they lived in.

Tens of millions of years ago, a diverse array of bird species soared, swam, and thrived amid their scaly reptile cousins—and ...

Cynthia Sass is a nutritionist and registered dietitian with master's degrees in both nutrition science and public health. Frequently seen on national TV, she's Health's contributing nutrition editor ...