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North Korea confirmed on Tuesday that it had successfully conducted a third nuclear test. It's an important step toward North Korea's goal of building a bomb small enough to be fitted on a missile that could reach United States.

The decision has been long anticipated. The Postal Service continues to lose billions of dollars a year and is looking for ways to cut costs. Eliminating Saturday delivery of first-class mail (but not packages) might save it about $2 billion annually.

Hollywood blockbusters usually do well in China. But last year, Lost in Thailand, a scrappy, slapstick comedy that cost less than $5 million to make, raked in $200 million in just seven weeks. It's now the highest-grossing Chinese film ever. It begins a limited run in the U.S. on Friday.

Many of the canines that have flocked to Manhattan are staying at the Hotel Pennsylvania. And there the pooches are treated like VIPs — very important pooches, that is. From spinach pizza to a doggie concierge, it's a pampered life for a show dog.

Testing for prostate cancer may not get any less confusing anytime soon. But researchers say the much-maligned PSA screening test is worthwhile if it's used for the right men at the right time.

Cardinals, conclaves, ballots and smoke. Understanding what comes next when the Vatican needs to name a new pope to lead the Catholic Church.

The diplomatic duel over Australian WikiLeaks founder Julian Assange intensified with Britain and Ecuador battling over his future. Ecuador says it will give Assange asylum. For now, he's holed up in Ecuador's London embassy. Britain says it wants Assange extradited to Sweden, where he's wanted over a rape allegation.

Russian authorities are investigating a reclusive Islamic sect said to have lived in subterranean burrows without electricity for 10 years. Officials have taken some 20 children away from the group in a case that pits religious freedom against wider social values.

Adam Steltzner, the leader of the Mars rover's entry, descent and landing engineering team, says he was terrified of "a false positive celebration" in the control room. Fortunately for him, Curiosity landed perfectly. Now he's eyeing Jupiter's moon.

Carl reads three news-related limericks: Drakkar Weight Watchers; Sacre Rude!; Bench Pressing Baby.