When we are saving money, it's not obvious that you can't buy something.

`When I embarked on this journey way back at breakfast.

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.