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Thursday is World UFO Day.The holiday is a day for the UFO community to come together to celebrate their beliefs in extra-terrestrials, according WorldUFODay.com. The website says the day is also used to encourage governments to declassify their knowledge about sightings.People can recognize the day by watching UFO movies and chatting with friends about the possibility of alien life.“The most important thing is that people collectively open their minds to the subject for one day and send out the message mentally that UFOs are welcome on this earth,” the website says.One popular topic among UFO enthusiasts is Area 51, where conspiracy theorists believe the U.S. government stores and hides alien bodies and UFOs.The U.S. government's official name for Area 51 is the Nevada Test and Training Range, which is a unit of the Nellis Air Force Base. Today, it’s used as an open training range for the Air Force.Just a few months ago, the Pentagon actually declassified three previously leaked top-secret U.S. Navy videos in an effort “to clear up any misconceptions by the public on whether or not the footage that had been circulating was real or whether or not there is more to the videos,” Pentagon spokesperson Susan Gough said.Gough added that the “aerial phenomena” in the videos remains characterized as “unidentified.”The National UFO Reporting Center, which maintains statistics about global UFO sightings, says there were just over 3,700 reported sightings in 2018 and more than 6,800 in 2019. So far in 2020, nearly 4,700 UFO sightings have been reported.The center’s data shows an uptick in the amount of UFO sightings reported over the past 30 years.Happy #UFOday! The National UFO Reporting Center reports that sightings are on the rise with 3,700 in 2018 and 6,889 in 2019. There have been 4,688 so far in 2020 but still no clear pictures despite everyone carrying amazing cameras... #iwantobelieve https://t.co/CYBoiOsGcf pic.twitter.com/tKsMbIgm13— Statista (@StatistaCharts) July 2, 2020 CNN contributed to this report. 2047

'Tis the season for spicy lattes, fast food turkey sandwiches and pumpkin-flavored everything.If you're a fan, you'd better act fast: They won't be around for long.That's by design. Seasonal items are an important marketing tool for the food industry, according to Alexander Chernev, a professor of marketing at Northwestern University's Kellogg School of Management.Limited releases almost give consumers a Pavlovian response. For example, when the weather turns colder, Starbucks customers habitually get excited about Pumpkin Spice Lattes. In November, customers come in to check out the new holiday cups."When you have these exclusive products, which exist for a short period of time, it gives people a reason to come to the store," Chernev explained.It's not just Starbucks that comes out with seasonal specials: Dunkin' Donuts announced a whole slew of pumpkin-flavored treats in August. McDonald's is getting ready for winter with the McRib. As the holiday season gets into full swing, we'll be sure to see Santa on Coca Cola bottles, turkey sandwiches from Subway and more. In the spring, it'll be Girl Scout cookie time.Related: The McRib is back at McDonald's For fast food chains in particular, which rely on familiarity, holiday items can offer consumers some variety."You need consistency because that's the brand mantra," said Chernev. "But no matter how much you like something, consuming something different ... increases the enjoyment of what you consumed before."Chernev says it's a neat marketing ploy: Although a specialty item may be exciting on its own, it can also remind consumers how much they like the basics.Seasonal offerings can also give brands a chance to test a new product. When Starbucks announced the return of the Pumpkin Spice Latte this year, it also unveiled the Teavana Pumpkin Spice Chai Tea Latte.And Chernev pointed out that seasonal menu items mean brands have something new to talk about every quarter.Starbucks says that's part of the rationale behind its seasonal drinks"We strive to provide our customers with unique, seasonal offerings to celebrate each season, and customer response has been extremely positive to that," a company spokesman said.Related: Hey, latte fans: Maple is having a moment this fallThere are some basic supply-and-demand economics behind limited-time releases too: Scarcity can build hype."It's a way to create excitement for the menu," said R.J. Hottovy, a consumer strategist for Morningstar.Items that might be popular for a few months probably wouldn't generate enough year-round demand.For example, when the McRib debuted in 1981, it was a dud. McDonald's pulled it from its menu four years later. Though it never achieved nationwide success, there were parts of the country where the McRib generated a solid enough fan base to bring it back every now and then."There's a lot of mystery around why the McRib comes and goes, but to be honest it's a local option based on consumer demand," a McDonald's spokesman said.The McRib works very well in the Midwest, but doesn't necessarily work as well in the coastal areas, Hottovy noted. That's why it makes sense to restrict the amount of McRibs that go on sale.Hottovy explained that sales typically rise for a short time when companies unveil seasonal items. But after a few weeks, that demand drops off after the core fans of the limited time product are satisfied.So enjoy your Pumpkin Spice Latte while it lasts. And let's be honest, you probably wouldn't want one in April.The-CNN-Wire 3526

To end the pandemic, there need to be enough people immune to COVID-19 and there are two ways to do that: immunity through infection or from a vaccine."I think racing to herd immunity is the dangerous thing that I’m concerned about," said Dr. Stuart Ray, a professor of medicine at Johns Hopkins University School of Medicine.Herd immunity is when the spread of the infection cannot be sustained because the number of people who are immune is high enough. Some countries are considering it as a strategy to combat COVID-19.But Ray said it could not work in the US unless much more effective treatments are developed.He says on average, a newly infected person infects two others, so to have herd immunity from COVID-19 about 60 percent of people would have to become immune."We would have something like another 100 million people, maybe more, infected. 150 million more and even if the major complication rate is a fraction of 1 percent, we will still have huge numbers of deaths," said Ray.He said we also don’t know if just having had the infection once will create lasting immunity to control the spread."It possible that you could be immune enough not to get sick and still not immune enough to prevent that spread and so herd immunity is a tough bar for us to aim for because not only do we need 60 percent of people to be immune but we need them to be immune in a way that prevents them from infecting other people," said Ray.The other way to achieve herd immunity would be through a vaccine."Vaccines can work better, provide better immunity than the natural infection does. The new shingles vaccine provides great immunity and protects more than 95 percent of people from getting shingles," said Ray.Several vaccines are still going through the last phase of clinical trials to see if any also creates enough immunity to prevent passing the virus along.This story was first reported by Abby Isaacs at WMAR in Baltimore, Maryland. 1946

Three national parks recorded its highest number of visitors last month.According to The Billings Gazette, Yellowstone National Park recorded more than 360,000 visitors in October, which is an increase of 110% from last October.Its previous October record was set in 2015 when 252,000 guests visited the 2.2 million-acre national park.But for the whole year, visitation is down 6% from the same time as last year, with about 3,740,000 people visiting the park, the Associated Press reported, but that's because the park was closed for two months due to the coronavirus pandemic.Another national park that saw record crowds was Grand Teton National Park, located 31 miles from Yellowstone.In October, Grand Teton saw more than 351,000 guests, which is up 88% percent from this exact time last year, the Gazette reported. According to the newspaper, the national park's previous October record was set in 2018 with more than 207,000 visitors.The newspaper also stated that Glacier National Park recorded more than 125,000 tourists last month. In 2018, only 78,000 guests visited, and over the previous three years, the national park has recorded about 85,000 people. 1172

Tough day for us at Twitter. We all feel terrible this happened.We’re diagnosing and will share everything we can when we have a more complete understanding of exactly what happened. ?? to our teammates working hard to make this right.— jack (@jack) July 16, 2020 271

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