Wondering how many people in the United States have a smartphone? If you poll 20 people on the street, your survey won’t be representative of the entire American population. But if you just want to ...

Results for the general public survey are based on telephone interviews conducted under the direction of Princeton Survey Research Associates International among a nationwide sample of 2,001 adults, ...

A survey by three industry trade associations tests the knowledge of four groups-the affected public, excavators, emergency responders, and local public officials-about pipelines in their communities.