The cities are the principal home and seat of the human group. They are the coral colony for Man, the collective being.

Zuckerberg rejected $2 billion for Facebook and has successfully created a company worth nearly $200 billion.

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

Zoos are becoming facsimiles - or perhaps caricatures - of how animals once were in their natural habitat. If the right policies toward nature were pursued, we would need no zoos at all.

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.