It's not popular in Germany to take all of our - a lot of euros here to the U.S. because we don't know it.

NPR: The Dollar Weak, New York Stores Turns to the Euro

Then you compare that to all the U.S. companies that you don't know anything about.

FORBES

U.S. officials say they don't know why the text messages weren't provided earlier.

WSJ: U.S.: Russia Withheld Intel on Boston Bomb Suspect

But I don't know of any steps that are happening at the U.N.

WHITEHOUSE: Press Briefing

Still, well over half of U.S. library card holders don't know whether their local public library lends e-books, according to a new Pew report.

CNN: E-book lending: Your public library's best kept secret?

Don't we have the right to know with whom the VP of the U.S. is meeting with?

CNN: John King: Stem cell research and Bush reaction to Mideast violence

If we don't want to increase U.S. forces in the near term, you know, because of the political liability associated with that, then we have to concentrate our forces much more and take some risk in other parts of the country while we're waiting for the Iraqi security forces to grow.

NPR: Is Victory in Iraq Still Possible?

U.S. officials say there's much they don't know yet about how the weapons have been used.

CNN: Obama must act on Syria chemical weapons

The U.K. expert group estimated as many as two of three women with ruptures don't know it.

WSJ: Breast-Implant Risk Remains a Fluid Question

Some 170 million people worldwide are infected with hepatitis C, including 4 million in the U.S. Around 80% don't have symptoms, which means most people don't even know they're infected.

FORBES: Magazine Article

"I don't know that people are ready for this, " says Gus Kious, President of Summa Physicians in the U.S., who has taught the system at hospitals and with senior management.

CNN: STORY HIGHLIGHTS