济南羊癫风治疗多少钱(淄博专治儿童羊癫疯医院) (今日更新中)

In an interview with the Washington Post, FDA Commissioner Scott Gottlieb said that the agency is proposing a ban on menthol cigarettes citing youth and minority smoking rates. According to the New York Times, a ban on menthol cigarettes could take several years to execute. It is a move that other nations have made. Canada has already implemented such a ban, and the European Union's menthol ban goes into effect in 2020. According to the FDA, menthol may reduce the irritation and harshness of smoking. According to FDA statistics, more than half of youth smokers smoke menthols. Also, a disproportionate number of minorities smoke menthols. Studies have also suggested that using menthol makes it more difficult to quit smoking, the FDA says. There have been groups, such as the African American Tobacco Control Leadership Council, that have pushed the federal government to ban menthol cigarettes. The council's co-chair, Phillip Gardiner, told the Washington Post, "I’m sorry it has taken the FDA so long to come around but I’m glad they finally are. They should have done it 10 years ago and saved hundreds of thousands of lives."According to FDA figures, more than 19 million Americans smoke menthols.  1273

If you're interested in fish who are scary-looking, poisonous and chock-full of elaborate defense mechanisms, look no further than the stonefish, a genus of fish that populate coastal waters of the Indo-Pacific region.As if their deadly venom and spiny exteriors weren't enough, scientists at the University of Kansas have found that stonefish also have a hidden switchblade on their face that they can flick out whenever they feel like they're in danger.Scientists call the bony, blade-like protrusion a "lachrymal saber," because it is located on a bone under the fish's eyes. Also, "lachrymal saber" is just a really metal-sounding name.William Leo Smith, associate curator and associate professor of ecology & evolutionary biology at KU, first started to understand how the lachrymal saber worked 15 years ago, when he was dissecting a stonefish he kept as a pet.This is a game-changerHe tells CNN the mechanism isn't just a cool new discovery (although it's that, too). It also changes the scientific understandings and classifications of this particular type of fish."It opens up these ideas of ecological questions. Muscular systems, bone systems, nervous systems all came together to form this. What led to its evolution or use?In other words, he says, "Why do we see this accumulation of so many horrible things on one fish?"The lachrymal saber is housed inside the fish's head, and they use their cheek muscles to deploy it. Though some stonefish are venomous, the saber is not.It could be a sex thing, tooSmith says he and his fellow researchers have reason to believe the saber isn't just for warding off predators: It could be a sex thing, too."There is evidence pushing towards that," he says. "They may use this in battles with other members of their species, like ram horns. It may also be involved in courtship behaviors."Oh, and the sabers glow."It's fluorescent green," Smith says. Since stonefish rely on camouflage for both protection and hunting prey, Smith doesn't think the fluorescence has a defensive purpose like, say, warning off predators.There are 134 described species of stonefish, and by Smith's observation, all of them have some form of lachrymal saber.  2202

I-8, from SR-79 (Japatul Valley Rd.) to E. Willows all lanes closed due to snow and ice.#SDCaltransAlert #Imperialvalley— Caltrans San Diego (@SDCaltrans) February 22, 2019 186

House Minority Leader Nancy Pelosi said at Wednesday's CNN town hall that she doesn't think campaigning on a potential impeachment of President Donald Trump is a good issue to run on."I do not think that impeachment is a policy agenda," she said.The California Democrat pointed to the ongoing special counsel investigation led by former FBI Director Robert Mueller, saying everyone should "let it take its course" before judging the outcome, and noting the difficult, divisive nature of moving to oust a president."Impeachment is, to me, divisive," Pelosi said. "Again, if the facts are there, if the facts are there, then this would have to be bipartisan to go forward. But if it is viewed as partisan, it will divide the country, and I just don't think that's what we should do." 789

In another blow to its recovery efforts, an island-wide power outage left most of Puerto Rico in the dark, with only a fraction of residents regaining electricity by Wednesday night.The latest blackout prompted Gov. Ricardo Rossello to call on the Puerto Rico Electric Power Authority (PREPA) to cancel its contract with the subcontractor that caused the massive outage."I have suggested to the PREPA Board of Directors that they cancel the contract with the Cobra subcontractor who is directly responsible for this power outage," he said in a statement Wednesday.An excavator operated by D. Grimm, a subcontractor for Cobra Acquisitions, apparently caused the blackout, according to the authority. Workers had been removing a fallen tower when the machine got too close to an energized line and an electrical ground fault caused the outage, according to Mammoth Energy, Cobra's parent company.The same company was responsible for an outage that affected 870,000 customers after a tree fell on a power line last week, PREPA said."This is the second power failure that has affected the people of Puerto Rico in less than a week," Rossello said. "This incident denotes the need to transform PREPA into a cutting-edge, modern and robust corporation. This is another example of why Puerto Rico's energy infrastructure needs to incorporate new forms of power."As of 8 p.m. Wednesday, only 334,000 customers in the US commonwealth had electricity again, according to a tweet from PREPA. It also said via Twitter that it's working to restore service through the island. 1570

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