Pew Research Center’s survey on international knowledge covers facts about global leaders, international institutions and geography, among other topics. The following criteria are used to evaluate how ...

A behind-the-scenes blog about research methods at Pew Research Center. For our latest findings, visit pewresearch.org. Pew Research Center has a long history measuring the public’s knowledge about ...

The Wong-Baker Faces Pain Rating scale is a self-assessment tool that helps communication about physical pain. It uses a combination of faces, numbers, and words, providing multiple ways for a person ...

When most of us get serious about losing weight or getting in shape, one of the first things we buy is a scale. However, these days, not just any scale will do. If you're like most people, you want to ...

Damian Lettoof receives funding from the Holsworth Wildlife Research Endowment. Kai Rankenburg, Monique Gagnon, and Noreen Evans do not work for, consult, own shares in or receive funding from any ...

Smart scales track changes in your muscle mass, body fat percentage and other health metrics — but how do smart scales work, and how accurate are they? When you purchase through links on our site, we ...

University of Illinois Physics Professor Paul Kwiat and members of his research group have developed a new tool for precision measurement at the nanometer scale in scenarios where background noise and ...