National News

The Secret History Of Knock-Knock Jokes

Knock. Knock.

Who's there?

Joe King.

Joe King who?

Joking like this used to be considered a sickness by some people.

The knock-knock joke has been a staple of American humor since the early 20th century. With its repetitive set-up and wordplay punchline, the form has been invoked — and understood — by people of all ages and sensibilities.

But knock-knock jokes have not always been universally appreciated. In fact, in the heyday of the knock-knock's popularity, certain critics railed against it.

Somehow — knock on wood — it has endured.

A general view of the volcano, which is Villarrica erupting near Villarrica, some 466 miles south of Santiago de Chile.

LOOK: Pictures Of The Villarrica Volcano's Eruption In Chile

The eruption of the Villarrica volcano in southern Chile has prompted the evacuation of thousands of people, as it spewed heavy smoke into the air and lava down its slopes.

The 9,000 foot volcano hovers over the city of Pucon, home to about 22,000 people.

"It was the most amazing thing I've ever seen," Travis Armstrong, a 29-year-old Australian tourist, told The Associated Press. "I've never seen a volcano erupt and it was spewing lava and ash hundreds of meters into the air. Lightning was striking down at the volcano from the ash cloud that formed from the eruption."

After Weeks Of Controversy, Netanyahu Takes The Podium Before Congress

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Hillary Clinton, seen here in 2011 during her tenure as secretary of state, used a personal email account instead of an official government account.

Hillary Clinton's Use Of Personal Email At State Department Raises Questions

During her four years as secretary of state, Hillary Clinton did not use a State Department email account, opting instead to conduct official business through a personal email account that wasn't then and is not now under the government's control.

The arrangement circumvented a federal process that could have automatically preserved Clinton's email communications in government archives.

How much flexibility does the Department of Health and Human Services have to move funding around within its budget?

GOP Faults Shift Of Funds To HealthCare.Gov From NIH And CDC

House Republicans are questioning why the Obama administration transferred money last year from the National Institutes of Health and the Centers for Disease Control and Prevention to pay for the operation of the federal health insurance marketplace.

"Now it appears that we are robbing Peter to pay Paul in order to finance the disaster that is HealthCare.Gov," said Rep. Jody Hice, a Republican congressman from suburban Atlanta.

Israeli Prime Minister Benjamin Netanyahu speaks before a joint meeting of Congress on Capitol Hill in Washington on Tuesday. He called the deal the U.S. and its allies are negotiating with Iran "very bad."

In Speech To Congress, Netanyahu Blasts 'A Very Bad Deal' With Iran

Israeli Prime Minister Benjamin Netanyahu said a deal the U.S. and its allies are pursuing with Iran over its nuclear program is "very bad" because, according to him, it doesn't take away the Islamic republic's ability to ultimately obtain nuclear weapons.

"This is a bad deal — a very bad deal," Netanyahu told a joint meeting of Congress today. "We're better off without it."

Alleged Patient Safety Kickbacks Lead To $1 Million Settlement

Dr. Chuck Denham, once a leading voice for patient safety, will pay $1 million to settle civil allegations that he took kickbacks to promote a drug company's product in national health quality guidelines, the Justice Department announced Monday.

Iraqi security forces and Shiite fighters fire artillery during clashes with ISIS militants in Salahuddin province. The push to retake Tikrit is being aided by Iran, which is providing rockets and other support to Iraq.

With Iran's Help, Iraqi Force Pushes Toward ISIS-Held Tikrit

The new Iraqi effort to retake Tikrit from the self-styled Islamic State, or ISIS, brought fierce fighting to areas around the city Tuesday. A local source says that Iran, which has already been aiding Iraq with artillery and intelligence support, has sent fighters to help seize Tikrit.

NPR's Alice Fordham reports:

People view a memorial to a man killed by police on Skid Row in Los Angeles. The police say two officers who were at the scene were wearing body cameras.

LAPD Shooting Update: Two Body Cameras, And A Gun Malfunction

Los Angeles Mayor Eric Garcetti and Police Chief Charlie Beck are calling for calm and patience, as three investigations are underway into the police killing of a homeless man Sunday. Police say the man "forcibly grabbed" an officer's gun before he was shot to death.

Beck called the incident a tragedy that followed a "brutal, brutal fight."

The police confrontation with a man known as Afrika was filmed by at least two eyewitnesses. A dramatic video sparked criticism of the police, as it showed several officers attempting to hold him down before shots rang out..

Israeli Prime Minister Benjamin Netanyahu gestures while addressing the 2015 American Israel Public Affairs Committee (AIPAC) Policy Conference in Washington, D.C. on Monday.

Controverisal Netanyahu Speech Is Latest Glitch In U.S.-Israel Relations

Israel's Prime Minister is expected to deliver a stern warning when he speaks to a joint meeting of Congress Tuesday morning. Benjamin Netanyahu says the nuclear deal that the U.S. and other countries are pursuing with Iran could threaten Israel's survival.

That's not a new message from Netanyahu, but it's drawing extra attention because of the way the speech came about: Republican congressional leaders invited the prime minister with no involvement from the White House.

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