An experimental six-strain Lyme vaccine has demonstrated more than 70% efficacy in preventing Lyme disease in people aged ...

Why do humans have an appendix? New research is reshaping our understanding of this overlooked organ and its antiquated role ...

Animal life is extraordinarily diverse and complex, having colonized almost all environments on Earth—from hostile ...

The droppings contain DNA, he thought, and perhaps, even after rain washes them away, some DNA might remain. And if it does ...

Researchers revisited the 1970s discovery of ancient stone tools at Monte Verde—an iconic site in Chile that transformed our understanding of how and when humans arrived in the Americas. Juan-Luis ...

The notorious disease known as sleeping sickness can lurk inside a host for months or even years before serious symptoms ...

A fossil ape discovered in northern Egypt is reshaping the story of human evolution. The species, Masripithecus, lived about 17 to 18 million years ago and may sit very close to the ancestor of all ...

Scientists studying 1,300 golden retrievers have uncovered genetic clues explaining why some dogs are more anxious, energetic, or aggressive than others. Remarkably, several of the same genes linked ...

Jawbone fragments and teeth from a previously unknown species hint that the evolution of modern apes occurred in what's now ...

The large swallows have nested alongside human settlements for centuries. Now, the birds' breeding success depends on ...