太原大便出血的病因(太原肛肠科 医院) (今日更新中)

The European leg of Lady Gaga's "Joanne World Tour" has been postponed as the singer grapples with health issues, Live Nation announced Monday.In a statement posted on the promoter's site, Live Nation revealed that the portion of the tour that was set to begin September 21 in Barcelona, Spain, and conclude on October 28 in Koln, Germany, has been postponed until 2018."Lady Gaga is suffering from severe physical pain that has impacted her ability to perform," the statement read. "She remains under the care of expert medical professionals who recommended the postponement earlier today." 599

The FBI continues to investgate reports of a #jetpack near #LAX on 8/30. Anyone with info about activity on or above the ground at the location depicted here should call the FBI. The FBI takes seriously events that threaten US airspace & investigates alleged violations #SafeSkies pic.twitter.com/dLZcZeRDuc— FBI Los Angeles (@FBILosAngeles) September 4, 2020 377

The Geminid meteor shower peaks this week, so hope for clear skies that will let you see a beautiful show of green fireballs on Thursday and Friday. This will be the last -- and strongest -- meteor shower of the year, according to NASA.This phenomenon was first recorded in 1862 and causes a show each December.In the hours before sunrise Friday, the most meteors will be visible in the North American sky, peaking about 7:30 a.m. ET, predicts Sky & Telescope. To see when they will peak in your part of the world, check here.But the morning isn't your only chance. On Thursday and Friday, keep an eye on the sky a few hours after sunset -- just keep the moon at your back.Although the Geminid shower is known for its "shooting stars," the number of meteors visible depends on the time and how dark it is. There will be fewer of them earlier in the evening, but the shower should hit a maximum of about 100 per hour around 2 a.m., NASA said. For those in the suburbs, expect about 30 to 40 per hour. And if you're in a city like New York, San Francisco or Atlanta, you probably won't see anything.Early evening meteors may be longer, with dramatic streaks that last several seconds. Later on, the meteors will present quicker streaks or leave trails of smoke that appear to glow.The asteroid 3200 Phaethon is responsible for this meteor shower, which is unusual because comets usually create meteor showers with icy debris. Scientists have debated the very nature of what Phaethon is. The closely tracked near-Earth asteroid has been likened to comets, so it's been called a "rock comet."Phaethon was discovered in October 1983 and named after the Greek myth about the son of Helios, the sun god, because it closely approaches our sun.Phaethon orbits the sun closer than any other asteroid and takes 1.4 years to orbit it. The asteroid heats to about 1,300 degrees Fahrenheit on closest approach to the sun, which causes it to shed dusty debris.These particles cause the meteor shower when they plunge into Earth's atmosphere at 22 miles per second, vaporizing in the streaks we call "shooting stars."If you live in an urban area, you may want to drive to a place that isn't littered with city lights that will obstruct your view. If you're able to find an area unaffected by light pollution, meteors could be visible every couple of minutes from 10 p.m. until dawn.Find an open area with a wide view of the sky, and don't forget to bundle up. Make sure you have a chair or blanket so you can look straight up. And give your eyes about 20 to 30 minutes to adjust to the darkness -- without looking at your phone -- so meteors are easier to spot.While you're keeping an eye out for the meteor shower, you might see a small, foggy green patch in the sky, NASA said. That will be Comet 46P/Wirtanen, which is making its closest approach to Earth -- within 7 million miles -- for the next 20 years. And it will be visible to the naked eye. The comet is expected to come closest to Earth and peak Sunday. 3007

The Centers for Disease Control and Prevention is now publicly acknowledging people can be infected with the coronavirus through airborne transmission, especially in enclosed spaces with inadequate ventilation.The update embraces growing evidence and international research showing the coronavirus can linger in the air longer - for minutes and hours - and travel farther than six feet.The update comes two weeks after the official CDC website was updated to reflect this, only to be removed a few days later with the agency saying it was “posted in error” before it was fully reviewed.The draft language seemed to imply aerosol or airborne transmission was the main way the coronavirus spreads, and the CDC says that is not the case.“Infections occur mainly through exposure to respiratory droplets when a person is in close contact with someone who has COVID-19,” the CDC states.Their added section is titled “COVID-19 can sometimes be spread by airborne transmission,” and includes information about smaller particles lingering in the air after an infected person had left the space. "Some infections can be spread by exposure to virus in small droplets and particles that can linger in the air for minutes to hours," it reads.“There is evidence that under certain conditions, people with COVID-19 seem to have infected others who were more than 6 feet away. These transmissions occurred within enclosed spaces that had inadequate ventilation. Sometimes the infected person was breathing heavily, for example while singing or exercising,” the new section on the CDC’s website reads. “These transmissions occurred within enclosed spaces that had inadequate ventilation.”The World Health Organization changed their guidance in July and noted the prevalence of airborne transmission of coronavirus and particles lingering in the air. Hundreds of scientists encouraged the WHO to make the acknowledgement following research and studies. 1943

The current day trading boom will end as these frenzies always do: in tears. While we wait for the inevitable crash, let’s review not only why day traders are doomed but also why most people shouldn’t trade, or even invest in, individual stocks.Day trading basically means rapidly buying and selling investments, hoping to profit from small price fluctuations. Brokerages have reported a surge in trading and new accounts this year, starting with March’s stock market crash when investors rushed in looking for bargains. As pandemic lockdowns kept people from their jobs and classrooms, trading continued to soar, especially among young adults.The poster child for this gold rush is Robinhood, a commission-free investing app that uses behavioral nudges to encourage people to trade. Robinhood added over 3 million accounts this year and in June logged more trades than any of the established, publicly traded brokerages. More than half of its customers are opening their first investment account, the company says.People can start trading with small amounts of money because Robinhood offers fractional shares. In addition to stocks and mutual funds, the app allows trading in options, cryptocurrencies and gold. Customers start out with a margin account, which allows them to borrow money to trade and amplify both their gains and their losses.Alexander Kearns, 20, is one example of what can go wrong. The University of Nebraska student killed himself after seeing a 0,165 negative balance in his Robinhood account. The novice trader may have misunderstood a potential loss on part of an options tradethat he made using borrowed money as a loss on the whole transaction. In reality, he had ,000 cash in his account when he died.Research has shown that the vast majority of day traders lose money, and only about 1% consistently get better returns than a low-cost index fund. A rising stock market, and a flood of inexperienced and excitable investors willing to bid up stock prices, has convinced more than a few day traders that they’re part of that 1%. They’re being egged on by the few people who actually will make money: the hucksters selling seminars, e-books and strategies that purport to teach you how to successfully trade.Stocks don’t always go upStocks overall are an excellent way to gain wealth over the long term. If you can weather the downturns, stocks historically have offered good returns.Those downturns can be doozies, however. Stocks lost half their value during the Great Recession that started December 2007. The market lost nearly 90% of its value in the early years of the Great Depression.Extended downturns have popped previous day trading bubbles, including the one that formed during the dot-com boom. The Nasdaq composite stock index rose 400% in five years, only to lose all of those gains from March 2000 to October 2002.Markets that go down eventually come back up. That’s not true of individual stocks. Any single stock can lose value, sometimes all the way to zero, and never recover.The sensible way to hedge that risk is diversification. That means buying stocks in many, many companies, including companies of different sizes, in different industries and in different countries. That’s prohibitively expensive for most individual investors, which is why mutual funds and exchange-traded funds are a better bet.There’s no such thing as a free tradeAnother way to grow wealth is to minimize investing costs. That means trading less, not more, because trading incurs costs even when there are no commissions involved.Investments held more than a year benefit from favorable capital gains tax rates, for example. Those held less than a year are taxed as income if the trade wasn’t made in a tax-deferred account such as an IRA.Another way cost is incurred is in what’s known as the bid/ask spread. The banks and financial institutions that facilitate trading in various stocks are called market makers. They offer to sell stocks at a certain price (the ask price) and will purchase at a slightly lower price (the bid price). People who trade stocks instantly lose a little money on each transaction because of this difference. That’s not a big deal for infrequent traders, but the costs add up if you churn stocks in and out of your portfolio.The biggest potential cost, though, is that every trade exposes your portfolio to the many ways we humans have of screwing up our money. We’re loss-averse and we want to avoid regret, so we hang on to losing stocks. We think that we can predict the future or that it will reflect the recent past, when this year should have taught us that we can’t and it won’t.We also think we know more than we do, a cognitive bias known as overconfidence. If you’re determined to trade, or day trade, don’t gamble more than you can afford to lose, because you almost certainly will.This article was written by NerdWallet and was originally published by the Associated Press.More From NerdWalletSuddenly Retired? Here’s What to Do NextSmart Money Podcast: Sudden Retirement and Finding Lost MoneyYou Can Use a Crisis to Build Helpful Money HabitsLiz Weston is a writer at NerdWallet. Email: lweston@nerdwallet.com. Twitter: @lizweston. 5216

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