Above: The Bounce Below trampoline in a Welsh cave, the best giant thing of the week

1. U.S. begins airstrikes in Iraq
So much for pulling out of Iraq. President Obama has ordered bombings of ISIS military targets after the insurgent group seized control of the country’s largest hydroelectric dam. Meanwhile, 40,000 members of Iraq’s Yazidi minority have fled to a mountaintop to escape jihadists, and are now stranded with limited supplies of food and water. [CNN]

2. New equation can predict fleeting happiness
Based on a series of studies, a team of U.K. scientists believe they have found the mathematical answer to momentary joy. The key? Low expectations and high rewards. We predict that anything to do with putting human emotion in terms of complex equations leads to instantaneous bummer. [BBC]

3. L.A. porn industry goes flaccid thanks to 2012 condom law
Talk about your mood killers. Ever since a county law passed that requires porn performers to wear rubbers onscreen, the number of X-rated film permits issued in the City of Angels has dropped by 90 percent. Man, Hollywood’s adult-film biz is really getting screwed here. They’ve really been brought to their knees. They’re really taking it har—okay, we’ll stop. [LA Times]

4. Scrabble adds 5,000 new words to its dictionary
For the first time in ten years, the word game is updating its lexicon with a bumper crop of new vocab, including bromance, geocache and selfie. It’s gonna be a lot harder to act intellectually superior when you’re tallying a Triple Word Score on chillax. [NBC News]

5. Shellings resume in Gaza as negotiations continue in Cairo
Five Palestinians have been killed and 31 wounded since rocket attacks resumed on both sides, following the end of a 72-hour ceasefire. At the same time, Israeli and Palestinian representatives in Egypt are in talks to bring an end to the conflict. [Guardian]

6. James Corden to replace Craig Ferguson as Late Late Show host
British actor and comedian Corden will take over longtime Late Late Show impresario Ferguson’s seat next year. Though he may not be a household name in the U.S. (yet), he’s been a big deal across the pond for some time now; and he’s really funny. And like his predecessor, he’s big into Doctor Who—Corden had a recurring role on Ferguson’s favorite sci-fi series a few years back. [The Wrap]

7. Woman reunites with mother, finds out she married her own brother
In a twist of fate worthy of Sophocles, a Brazilian tracked down her long-lost mother…only to discover that the elder woman had also given birth to her daughter’s husband. The couple, who have a six-year-old daughter, have decided to stay together in spite of the biological ick factor. [Gawker]

8. Giant trampoline park opens inside a Welsh cave
Well, this sounds amazing. Bounce Below, a new attraction in Northern Wales, is a series of trampolines built inside a former slate mine 100 feet underground. The highest bouncing spot is a mind-bending 180 feet above the cavern floor. What are the odds this is a lost level of Super Mario Bros. come to life? [Smithsonian]

9. “Apparently” kid takes over local newscast
The latest pint-sized YouTube celebrity is five-year-old Noah Ritter, who gave a weird, adorable interview for a local-news reporter at a county fair in Wilkes-Barre, Pennsylvania earlier this week. He’s since gone of The Today Show, and Colbert has called him the successor to Sean Hannity—much to the Fox News host’s chagrin. Apparently, Hannity doesn’t know how to take a joke. [USA Today]

10. Metta World Peace changing his name to “The Pandas Friend”
Sure, why not? The pro basketball player formerly known as Ronald Artest had his name legally changed to Metta World Peace in 2011 while playing for the L.A. Lakers. Now, according to his Twitter feed, he’s changing it again as he begins his stint with China’s Sichuan Blue Whales. The bizarre moniker is fine; but we can’t get on board with his flagrant disregard for proper punctuation. [Bleacher Report]