A physician can sometimes bury the scythe of death, but he has no power over the sand in the hourglass.

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

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.

Zoology has always been interesting to me. Nature is fascinating.