Every superhero has this superhero identity and a civilian identity. A lot of their lives are about code switching.

Zuck is unemotional. He doesn't get influenced by ego.

Zoom Air, one of Nike's most popular shoes, was introduced to the market in 1995, but was first given the name Tensile Air.

Zoologists study the behavior, physiology, classification and distribution of animals, whether they are living or extinct.

Zoologists may find jobs working for government agencies, non-profit organizations, universities, museums and zoos.