Here’s a sampling of the basics: DNA Analysis is the Gold Standard In 1984, a British geneticist named Alec Jeffreys stumbled upon one of our most important forensic tools : DNA fingerprinting.

Spear phishing is a targeted email attack purporting to be from a trusted sender. Learn how to recognize—and defeat—this type of phishing attack.

They're not designed to perfectly figure out what everyone is thinking on a particular issue or candidate, ... To make the estimate more accurate, pollsters use random sampling and weighting.