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Today on CNN 10, we head to South Korea and explain why thousands of doctors are protesting on the government's plans to increase medical school admissions. Then, we head to the Sierra Nevada Mountains, where blizzard conditions are slamming the region, making travel dangerous. We get the latest on ground in the Texas panhandle, as residents there continue to deal with the largest fire on record in the state of Texas. And before you go, we will profile NASA's experimental plane, called the X-59, a quiet supersonic aircraft looking to revolutionize the air travel industry. All that and more on this episode of CNN 10.