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A gunman killed two people in the parking lot of a Walmart in Duncan, Oklahoma, on Monday morning before turning the gun on himself, police Chief Danny Ford said.The Duncan Police Department said a man and woman had been killed in a car parked at the Walmart. Both were in the front seats, while the other man was found on the ground on the driver's side of the vehicle, near the back door, Ford said.Witness Aaron Helton 434

A handful of low-polling moderates hoped to break through in a crowded Democratic field during Tuesday's debate by confronting the top-tier candidates on stage, Massachusetts Sen. Elizabeth Warren and Vermont Sen. Bernie Sanders.Warren and Sanders withstood the attacks -- and counterpunched much harder.The two most progressive candidates in the 2020 Democratic field struck inspirational tones, with Warren urging Democrats to be "the party of big, structural change." And they won over the crowd as they debated with moderate critics who tried to question their electability and the feasibility of their ideas, but failed to knock either candidate on their heels even once.In the process, they could have eased primary voters' fears that their policy proposals would make ripe targets for President Donald Trump and the GOP in a general election.For their part, moderates pushed back as they tried to define themselves on health care and decriminalizing the border. Mostly, though, their highlighting of ideological differences within the party offered Warren and Sanders a tune-up for higher-stakes showdowns this fall against the Democratic front-runner, former Vice President Joe Biden.Here are seven takeaways from Tuesday night, the first of the two nights of CNN's Democratic debate in Detroit:1. Warren and Sanders swat away their criticsFormer Maryland Rep. John Delaney's argument for pragmatism midway through the debate teed Warren up -- and she landed a haymaker."I don't understand why anybody goes to the trouble of running for president of the United States just to talk about what we really can't do and shouldn't fight for," Warren said.The crowd erupted. Before the debate ended, Delaney's Wikipedia page had been updated to say he'd died at Warren's hands in Detroit.It wasn't the only time Warren took on Delaney. Early on, she called his attacks on "Medicare for All" proposals "Republican talking points."Then there was Sanders' retort when Ohio Rep. Tim Ryan told him that "you don't know that" as he questioned the coverage Medicare for All would provide."I do know. I wrote the damn bill," Sanders shot back.The visuals were memorable, too. Sanders at one point threw his hands up at Hickenlooper. Warren rubbed her hands at the thought of implementing her 2% wealth tax on Delaney's million personal fortune.Delaney, Ryan, former Colorado Gov. John Hickenlooper and Montana Gov. Steve Bullock all went at Sanders and Warren from the right. Delaney began the debate by comparing the two to failed Democratic nominees George McGovern (1972), Walter Mondale (1984) and Michael Dukakis (1988).The problem facing the moderates is that their arguments largely consisted of dire warnings about the political consequences of moving too far left. They didn't offer Democratic voters an alternative vision for a post-Trump America.It's why none of them landed real blows on Warren or Sanders all night. If anything, sparring with the low-polling quartet served to sharpen Warren and Sanders for the fights against stronger opponents ahead.2. No daylight between Warren and SandersThe top two-polling progressives in the Democratic field were positioned on stage next to each other Tuesday night. But they showed no appetite for a fight with each other.Instead, Warren and Sanders largely stood together, beating back moderate critics all night.The two are courting different voters right now, but eventually, one of the them will need to consolidate progressive support to win the Democratic nomination.Still, Tuesday night showed that the time to turn against each other could be months away. Both are considered top-tier candidates who poll viably and are raising money effectively, and both appear to believe it's far too early to take such a risk.3. 'Dark psychic force'Author Marianne Williamson provided one of the night's most memorable moments when she addressed the water crisis in Flint, Michigan, with a stirring condemnation of environmental racism -- and other candidates' approach to talking about it."This is part of the dark underbelly of American society, the racism, the bigotry, and the entire conversation that we're having here tonight -- if you think any of this wonkiness is going to deal with this dark psychic force of the collectivized hatred that this President is bringing up in this country, then I'm afraid that the Democrats are going to see some very dark days," she said."We need to say it like it is," Williamson said. "It's bigger than Flint. It's all over this country. It's particularly people of color. It's particularly people who do not have the money to fight back, and if the Democrats don't start saying it, why would those people feel they're there for us? And if those people don't feel it, they won't vote for us and Donald Trump will win."The answer was a reminder of how powerful the perspective of a political outsider can be in presidential races. Williamson is a low-polling long-shot, but generated buzz with her condemnation of "wonkiness" on racism.4. Seeking a middle ground on health careThe debate began with a battle over health care dominated by Sanders and Warren defending Medicare for All against Delaney, Hickenlooper and Montana Gov. Steve Bullock, who cast it as politically fraught in a general election.Former Texas Rep. Beto O'Rourke and South Bend, Indiana, Mayor Pete Buttigieg sought middle grounds -- and their answers on health care underscored where they are trying to fit into the Democratic field.O'Rourke touted a plan called "Medicare for America." It would enroll uninsured Americans in Medicare, and allow those who are dissatisfied with their private insurance to opt into Medicare -- while retaining private insurance for those who wish to keep it."Our plan ensures everyone is enrolled in Medicare or can keep their employer-sponsored insurance," he said.Buttigieg argued for a similar approach -- and said Democrats should stop worrying about being called socialists by Republicans over the health care policies they back."If it's true that if we embrace a far-left agenda, they're going to say we're a bunch of crazy socialists. If we embrace a conservative agenda, you know what they're going to do? They're going to say we're a bunch of crazy socialists," he said. "So let's just stand up for the right policy, go out there and defend it."5. Arguments for reparationsAsked about racism, O'Rourke was the first Democrat on stage to argue for a step toward reparations."The very foundation of this country -- the wealth that we have built, the way we became the greatest country on the face of the planet -- was literally on the backs of those who were kidnapped and brought here by force," he said.O'Rourke said he backs legislation by Texas Rep. Sheila Jackson Lee that would create a commission to study reparations.It was an effective moment for O'Rourke -- who, like Buttigieg, Williamson and Minnesota Sen. Amy Klobuchar -- didn't end up playing a part of the memorable clashes with other candidates, because they didn't fit into the progressives-vs.-moderates theme that Warren, Sanders and their critics established early on. 7153

Researchers are trying to find out as much as they can about great white sharks.After a couple of attacks involving people last year, there are new efforts to learn more about these animals. It’s moments like the incident at Nauset Beach South that shark experts are studying more closely. Video taken of the beach shows white sharks feeding on seals close to the shore. Now, researchers are launching new studies, including one looking at the feeding habits and behaviors of these sharks. “We're essentially going to be giving iPhones to white sharks to track their activity in three dimensions at a really fine scale,” explains Megan Winton, a research scientist with the Atlantic White Shark Conservancy. Winton and other researchers will be tagging sharks with devices similar to what's in smartphones. “We'll be able to identify how often they're feeding on seals. We'll be able to look for relationships with feeding activity and environmental conditions,” Winton says. The data would be given to officials to use to provide better warnings on beaches. The Atlantic White Shark Conservancy is currently pouring over data on a population study they just finished. “Based on the video footage, we were able to identify every shark we saw to an individual level,” Winton says. So far, the researchers have identified more than 300 white sharks. Winton calls it a conservation success story, thanks to protections put in place over the last few decades. “So one thing I like to remind people is that these are large, amazing animals and they're very capable predators and they're certainly deserving of our respect,” Winton says. “But they're not monsters out there, lurking our coastline menacing our beaches. They're big fish out there eating their natural prey item.” White sharks are the only natural predator to seals in the Cape Cod area, which some residents and fisherman see as a nuisance.Researchers want to see how many seals the sharks are eating and if they can impact the seal population. 2023

A feature that Facebook shut down in the wake of last year's Cambridge Analytica scandal came back to haunt it on Wednesday, when it emerged that hundreds of millions of Facebook users' phone numbers had been found in an unprotected online database.Millions of American Facebook users' phone numbers are believed to be among those found. Facebook said there is no evidence that any accounts were compromised. Even so, the latest discovery is a reminder that even new, stricter security policies can't necessarily address past data leaks or abuses.Until April 2018, people could enter another person's phone number to find him or her on Facebook. The company shut down the feature in the weeks after the Cambridge Analytica scandal broke because it found "malicious actors" had abused the feature to gather public information on Facebook users, a process known as scraping."Given the scale and sophistication of the activity we've seen, we believe most people on Facebook could have had their public profile scraped in this way," Mike Schroepfer, Facebook's chief technology officer, 1095

A dog in Hawaii was rescued last week after being found buried alive in the sand on an Oahu beach. The dog, dubbed Leialoha by the group that rescued her, was found swollen, sunburned and missing about 90 percent of her fur, 237