Worrying is like paying on a debt that may never come due.

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.

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