Who Is Patient Zero for AIDS in USA?
Who Is Patient Zero for AIDS in USA? The expression patient zero comes from epidemiology, or “the study of the spread of disease.” The source of infection for patient...
Read MoreWho Is Patient Zero for AIDS in USA? The expression patient zero comes from epidemiology, or “the study of the spread of disease.” The source of infection for patient...
Read MoreWho Was Frans Hals the Elder? Fran Hals the Elder (1582-1666), was a Flemish born painter, normally of portraits, who lived and worked in Haarlem. He settled in Holland...
Read MoreWhat Is a Baker’s Dozen? A baker’s dozen is a group or set of 13 (or, more rarely, 14), instead of 12. It takes on importance in large families, where that little...
Read MoreWhat Is a Gordian Knot? “Cutting the Gordian Knot” is an expression describing the solution of a problem by quick, decisive action. It is often used as a metaphor for...
Read MoreWhy Do We Smile? We smile to show our pleasure or amusement in something or with someone. In fact, smiling seems to be an expression with which we are born, for most...
Read More