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(AP) - President Trump threatened Friday to shut down the U.S.-Mexico border if lawmakers fail to give him the billion he requested to build a border wall. On Twitter, the president wrote he will “close the Southern border entirely” if he does not get the money from “Obstructionist Democrats”. We will be forced to close the Southern Border entirely if the Obstructionist Democrats do not give us the money to finish the Wall & also change the ridiculous immigration laws that our Country is saddled with. Hard to believe there was a Congress & President who would approve!— Donald J. Trump (@realDonaldTrump) December 28, 2018 648

 Two 250,000-year-old teeth from two Neanderthal children revealed that both of them were exposed to lead twice during their short lifetimes, the first known case of lead exposure in Neanderthals.An international team of researchers studied the two teeth, as well as one from a modern human child who lived 5,000 years ago. All of them are from the same archaeological site in southeast France. The results of their analysis were published Wednesday in the journal Science Advances."Traditionally, people thought lead exposure occurred in populations only after industrialization, but these results show it happened prehistorically, before lead had been widely released into the environment," said Christine Austin, study co-author and assistant professor in the Department of Environmental Medicine and Public Health at the Icahn School of Medicine at Mount Sinai. "Our team plans to analyze more teeth from our ancestors and investigate how lead exposures may have affected their health and how that may relate to how our bodies respond to lead today."And as with tree rings, researchers used the teeth to determine key events in the children's lives. During childhood, new teeth layers are formed each day, capturing chemical signatures that can be traced."Teeth record environmental variation based on the climate, even where you're growing up," said Tanya Smith, lead author of the study and associate professor at Griffith University. "That's possible because when you're growing, your teeth you actually lock in a record of the chemistry of the water and the food that you're eating and drinking. Because teeth have these tiny timelines, we can relate the chemistry to the growth to calculate ancient climate records. We can't do that with any other element of the body."They were able to determine that one of the Neanderthal children was born in the spring and that both children were more likely to be sick during the colder winter seasons. They lived through more extreme seasons with a greater variation in temperature than the modern human child who was also studied.The intact teeth had growth rings, which the researchers used to measure barium, lead and oxygen. Lasers targeted tiny spots in the teeth to map their chemistry and reconstruct ancient climate records. This reconstruction was able to map a weekly scale of variation, showing when the summer and winter seasons happened and how long they lasted. The researchers related this back to the individual's growth."This study reports a major breakthrough in the reconstruction of ancient climates, a significant factor in human evolution, as temperature and precipitation cycles influenced the landscapes and food resources our ancestors relied on," Smith said.The growth rings also provided evidence of nursing."We were able to identify milk intake through breastfeeding in one individual based on a trace element called barium," Smith said. "We were able to time that to the season."That individual nursed for 2? years, which is similar to modern human children who lived in hunter-gatherer environments. "This is something we may share in common with Neanderthals," Smith said. Unfortunately, although the Neanderthal child survived infancy, it did not reach adulthood. The ages of the children were not included in the study.The researchers believe that the children were exposed to lead environmentally, either inhaling or ingesting it."That must have come from natural deposits in the area, whether they were going into an underground environment or they were eating contaminated food that was incorporated into their growing bones and teeth," Smith said.Smith believes that this research emphasizes the different levels of information that can be taken from teeth."We've now got the ability to integrate ancient climate data with health history, nursing history and illness," she said. "To be able to get all that information from a single sample 250,000 years ago is a unique opportunity."But this doesn't just apply to studying those who lived before us."Dietary patterns in our early life have far-reaching consequences for our health, and by understanding how breastfeeding evolved, we can help guide the current population on what is good breastfeeding practice," said Manish Arora, study co-author and vice chairman of the Department of Environmental Medicine and Public Health at the Icahn School of Medicine. "Our research team is working on applying these techniques in contemporary populations to study how breastfeeding alters health trajectories including those of neurodevelopment, cardiac health and other high-priority health outcomes." 4648

(CNN) -- A farmer in Nebraska was just trying to transfer some corn from one place to another when he accidentally stepped into a hole, the hole happened to be a grain auger.Kurtis Kaser, 63, knew he had to act quick as his leg was getting pulled into the machine."I didn't know what to do and I didn't know how long I would keep my consciousness either, I about gave up but then I remembered I had my pocket knife," Kaser told CNN.Kaser was at the farm by himself in Pender, located near the Iowa border, about three and a half weeks ago, when he had to make the split decision to cut off his leg."I didn't have a phone on me, I didn't know where it had gone, so I just started cutting with the knife," he said. "I knew I was done cutting because I felt a funny feeling, maybe it was a tendon I cut."The farmer said shortly after, he proceeded to crawl towards his house using his elbows so he could reach a phone to call for help."I stopped for a little bit but I didn't want to stop for long in case I passed out, there was no way for me to get help, everyone was gone at the time, I just did what I had to do and they (first responders) got me in a helicopter," he said.He was rushed to Bryan Medical Center and stayed there for about a week before transferring to Madonna Rehabilitation Center, where he underwent physical therapy."I was 45 minutes away from home when this happened, they were flying him away as I was arriving and I didn't get to see how he was doing before that," his wife, Lori, told CNN. "I am just glad he's here with us."This isn't the first time Kaser has had a scare like this on the farm."These accidents happen all the time, when I was a sixth grader my other leg got stuck in a tractor, only my skin suffered that time," he said. "We're kind of used to this around here."Kaser said he doesn't remember how long the whole ordeal lasted but when he returned home from the rehabilitation hospital on Friday, he was shocked to realize how far he had crawled."Everyone asks me why I am so calm about the situation and the truth is, when I was in Madonna (the rehabilitation hospital), I saw so many people who will probably never be able to walk again and I know I will be able to walk mildly normal, I'm fortunate."His wife said they are now adjusting to the new lifestyle and within time they know everything will be back to normal. Once his leg is finished healing, he'll be fitted for a prosthetic and Kaser told CNN affiliate KETV that he'll be back to farming in no time. 2513

Would you have surgery performed if it was done by a robot? Robotic surgery is now an option at more hospitals across the country.Patient Matthew Canino says the technology helped his heart.“The nature of being a SWAT officer can be very taxing on your body,” Canino says. “So, you have to be in very good physical condition.”But when Canino trained, he noticed something was off.“My heart would race, primarily when I was working out, it would race,” Canino remembers. “And I'd get short of breath. And I kind of I would just stop what I was doing, and it would go away, and I thought everything was fine.”But it wasn’t. Canino’s doctors found out a valve in his heart was leaking.“He said if it wasn't repaired it would continue to get worse and would likely lead to heart failure,” Canino recalls.He thought he’d have to get open heart surgery. However, his doctor recommended a robot instead.“We can get inside the heart through these keyhole incisions on the side of the chest, without cutting through any bones,” says Dr. Sanjay Tripathi, cardiothoracic surgeon at Swedish Medical Center.Dr. Tripathi inserted this camera and robotic arms inside Canino’s chest, and then he sat down at a console inside the operating room where he controlled the robot to do the surgery.“With the robotic technology, particularly 3D high definition imaging from the camera, we're able to see these fine details that would otherwise be a little bit more difficult,” Dr. Tripathi says.Swedish Medical Center is the only hospital in Colorado offering cardiothoracic surgeries with the aid of a surgical robot. But they’re becoming available at more hospitals around the country, and patients are seeing big benefits.“Less pain,” Dr. Tripathi says. “Faster recovery, less bleeding, fewer infections.”“By the third day I was almost completely pain free and needed no pain medication at all,” Canino says.Not all heart surgeries can be done robotically, but the hope is as technology advances, that will change. 2006

With former New York City Mayor Michael Bloomberg rising in the polls, his successor and a former presidential candidate is wading back into the 2020 Democratic primary. Mayor Bill de Blasio, who himself had a curtailed run for the White House this primary season, is expected to endorse Vermont Senator Bernie Sanders for President, according to 359