Note: This report was updated on Dec. 30, 2015 to reflect the January-July 2015 National Health Interview Survey estimates released on December 1, 2015. Telephone surveys face numerous challenges, but ...

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 ...

Passive sampling has emerged as an indispensable tool for monitoring hydrophobic organic contaminants (HOCs) in diverse environmental media. By employing polymer-based materials, researchers are able ...

The sampling Moiré method is a non-contact optical technique that has gained prominence for its ability to precisely measure strain and deformation in various materials and structures. This method ...

Drone-based blow sampling advances pathogen surveillance in North Atlantic whales using DJI equipment for non-invasive health monitoring.

Coal remains one of the principal sources of energy for the United States, and the nation has been a world leader in coal production for more than 100 years. According to U.S. Energy Information ...