A new study led by researchers at UC San Diego shows a certain protein detected in the blood can provide decades of early warning that a person is at an increased risk of developing dementia later in ...

Hundreds of millions of animals are killed on our roads each year. Now, scientists have revealed how these deaths could play ...

Researchers from the University of Southern Denmark investigated how eight weeks of high-intensity interval training affect the structure of mitochondria—the parts of muscle cells that produce energy.

Pew Research Center designed this study to assess the current state of online survey sampling methods – both probability-based and opt-in – and determine their accuracy on general population estimates ...

Behavioral economics relies heavily on studies of Western, educated people. A recent analysis provides evidence that ignoring racial diversity within the United States has led to flawed ...

The largest-ever black-box study on the accuracy of bloodstain pattern analysis (BPA), a widely used forensic technique, has found concerning error rates and ...

Historically, killer whale diet research relied on surface sampling of prey fragments, usually scales, helping researchers to determine primarily salmon species. Newer techniques that analyze DNA in ...

This study looks at how national public opinion polling in the United States changed from 2000 to 2022. It focuses on two aspects: the sample source(s) – that is, where the survey takers came from – ...