Five stories that have North Texas talking: What were people thinking on Interstate 635 Tuesday?; five Dallas boys are victims in a massive child porn ring; a bull ran through Waco; and more:

So what happened on Interstate 635 Tuesday afternoon? A five-car wreck shut down all eastbound lanes on LBJ near the Audelia Road exit in northern Dallas. Motorists took matters into their own hands, turning around on the highway, going in the wrong direction, trying to maneuver around cars stuck in traffic. It was a crazy scene captured by local TV stations. On Twitter, people described the scene: “Insanity.” “You crazy for this one, Dallas.” The Dallas Observer reported that LBJ has been “taken by the Trafficpocalypse.” “Clearly, though, there are larger forces at work here than a single erratic driver,” the Observer jokingly noted. “Central will be the next to go, then Stemmons. Abandoned cars will litter the freeways. Civilization as we know it will grind to a halt. Only the bicyclists will survive.” KDFW-TV (Channel 4) has video.

Check this out on LBJ! Never seen anything like it! Insanity! (traffic should be directed to left side of screen) pic.twitter.com/HJHFQQ4Zc1

— AshleyLowellDoussard (@AshleyNBC5) March 18, 2014

• Federal authorities have arrested 14 men who they say ran an online child exploitation network that victimized at least 250 juveniles from 37 states and five countries. Five of the victims are from Dallas and they range in age from 11 to 16. The website operated in 2012 and 2013 and had more than 27,000 members. The Dallas Morning News reports: “The young boys thought they were chatting online with girls their own ages. But the people to whom the boys sent thousands of lewd webcam videos of themselves were actually adult men, who then shared the videos with others worldwide on an underground child pornography website. Many of the boys had no idea where the videos ended up, officials said.”

• A bull ran through the streets of Waco Tuesday before two animal control cowboys finally grabbed it. The Waco Tribune-Herald reports that the bull was being vaccinated when he broke out and ran for it. A man wielding a whip and lasso “chased the bull in a red pickup truck,” the newspaper reports. Police cars followed. The bull landed in a fenced yard, where his adventure came to an end. Animal control cowboys arrived with horses and lassos. A Waco police spokesman told the newspaper that this happens from time to time – but usually in the country. “The good thing about living in Texas is that it’s not too long after you call a cowboy that you get one coming to you,” the spokesman said.

• SMU says it has one of the top academic supercomputers in the nation with its new ManeFrame. And it will introduce the new computer at 4 p.m. today. SMU says: “The new tool will be opened to the campus in May, expanding faculty and student research into subjects ranging from particle physics, to human behavior, to water quality and drug discovery.” At its peak, ManeFrame can compute more than 120 trillion mathematical operations per second. The computer was named ManeFrame in honor of the university’s Mustang mascot. The student who named it will win a Dell laptop.

• We have a winner in the Dallas Museum of Art’s March Madness contest.Rufino Tamayo’s El Hombre (Man) is the first DMA Art Madness Champion. More than 5,000 votes were cast over the three-week competition. You can visit the winning work in the DMA Atrium for free during museum hours. Friday is the DMA’s Late Night, when the museum will be open until midnight with free general admission and activities.