In ancient China, a spit-out portion of rice revealed whether a person was telling lies—dry rice indicated the dry mouth of a liar. Sound unreliable? So is the polygraph test. Literally meaning "many ...

May 3 - Honestly, someone here must be fudging. On one side stand some 2,000 U.S. polygraph examiners who swear that their machines can sniff out fibs in suspected crooks or job applicants more than ...