In practice, I think it's very difficult to do on any kind of a scale.

WSJ: Reaching Outside The Ivory Tower

"If you're a physician and you use this drug in your practice, I think it might be worth reconsidering, " says Allen Taylor, head of cardiology at Walter Reed Army Medical Center.

FORBES: Magazine Article

"I think there's no question that he's a pragmatic politician, and I think he has seen the need to be bipartisan at least in rhetoric and maybe in practice, but I wouldn't over-emphasise this, in that the US is a very different kind of political system, " says James Cronin, a professor of history at Boston College.

BBC: Is Barack Obama a Tory?

In my mind, I think that would necessitate that the whales are able to practice basic mathematic skills.

FORBES: Do Whales Use the Stars to Navigate?

Back in 1701, the citizens of Philadelphia launched what I think is the first successful petition drive in the New World when they asserted and won the full and unfettered rights to practice whatever religion they chose.

CNN: Transcript: Clinton speaks on 'patients' bill of rights'