The term planet has been around since Ancient Greece, but coming to consensus on a precise definition today proved challenging, even for the world's top scientific minds.

NPR: Pluto, the Un-Planet?

Microbial genetics is enabling a more precise definition of bacterial, viral and parasitic threats - and how they develop resistance to treatments.

BBC: The man who gives away ?600m a year

But Christensen actually gave it a fairly precise definition.

FORBES: Disruptive Blogging

Courts find it almost impossible to pin down a precise enough legal definition of privacy.

ECONOMIST: The surveillance society | The

To make the definition a bit more precise, start with FFO.

FORBES: Shaky Dividends

But there is no precise definition of what makes a supervolcano.

FORBES: Predicting The Supervolcano (Or, We're All Going To Die? It Must Be Tuesday)

First, they seem to fit the precise definition of the sort of people that the transnationalists have a responsibility to protect.

CENTERFORSECURITYPOLICY: Obama's altruistic foreign policy