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Prince Harry opened the fourth annual Invictus Games in style on Friday afternoon, climbing Australia's iconic Sydney Harbour Bridge along with a number of veterans and competitors from the upcoming event.Dressed in a black shirt with the logo of the sporting event he helped to kick-start in 2014, the British royal ascended the 13-meter (439 foot) high landmark in beautifully sunny weather, accompanied by Australia's Prime Minister Scott Morrison.It will be the fourth time the annual games have been held. The Invictus Games are a multi-sport event specifically held for wounded or disabled veterans to participate in. 631

Researchers from Florida Atlantic University released a video on Tuesday that shows how droplets disperse into the air from a person’s mouth.The researchers used different kinds of masks to analyze the disbursement of the droplets. The researchers also showed that without a mask, six feet of distance might not be enough to avoid infection.The FAU team tested a single-layer bandana-style covering, a homemade mask that was stitched using two-layers of cotton quilting fabric consisting of 70 threads per inch, and a non-sterile cone-style mask that is available in most pharmacies. The team used a mannequin, Laser lights and synthetic fog to help visualize the spread of the droplet from a cough..The researchers said that stitched quilted cotton masks worked the best in the simulation, with droplets from emulated coughs traveling just 2.5 inches from the mask. By comparison, without a mask, the droplets moved more than 8 feet, with some droplets traveling up to 12 feet during a heavy cough. The researchers also noted that the droplets remained suspended in midair for up to three minutes in the simulated environment.“We found that although the unobstructed turbulent jets were observed to travel up to 12 feet, a large majority of the ejected droplets fell to the ground by this point,” said Dhanak. “Importantly, both the number and concentration of the droplets will decrease with increasing distance, which is the fundamental rationale behind social-distancing.”FAU said that droplets from a cough traveled 3 feet, 7 inches from a bandana; 1 foot, 3 inches from a folded handkerchief; and 8 inches from a cone-style mask.“Preliminary results from our experiment reveal that significant concentrations of small particles from a turbulent jet such as from a heavy cough/sneeze can linger in still air for more than one minute. It only took the particles a couple of seconds to travel 3 feet; in about 12 seconds it reached 6 feet and in about 41 seconds it reached around 9 feet,” said Siddhartha Verma, an assistant professor in FAU’s Department of Ocean and Mechanical Engineering.Last week, the University of Washington’s Institute for Health Metrics and Evaluation projected that 33,000 American lives would be saved between now and October 1 by near universal wearing of masks.Last month, a study in the Lancet found that the use of masks and respirators by those infected with the virus reduced the risk of spreading the infection by 85%. The authors analyzed data that showed that N95 respirators in healthcare settings were up to 96% effective. Other masks were found to be 77% effective.The CDC issued guidance in April to recommend mask wearing while in public, which has become a requirement to enter retail establishments in more than a dozen states.The CDC's guidance stressed several points: That wearing a face covering is not a substitute for social distancing, and that the public should not use medical or surgical masks. The recommendations suggest the public should use fabric or cloth that covers the mouth and nose.To view FAU's video, click here. Justin Boggs is a writer for the E.W. Scripps National Desk. Follow him on Twitter @jjboggs or on Facebook . 3198

Researchers say a whale found in the Arctic could be susceptible to COVID-19 since it's "particularly susceptible to infection."Researchers headed up by Martin Nweeia from Case Western Reserve University School of Dental Medicine in Cleveland, Ohio, will observe wildlife, mainly the narwhal whale is known for its vast nine-foot tusk."Scientists have a difficult enough time keeping up with the human spread of this virus, so we are eager to monitor an animal that is particularly susceptible to infection," Nweeia said in a press release.Nweeia has studied the narwhal for over 20 years, so he and his team know that animals can get the deadly virus."If this coronavirus were to gain a foothold in wildlife, there could be potential cascading impacts for ecosystems worldwide and the communities that rely on them," Nweeia added.Additionally, Nweeia and his team have already been observing the Ugandan lowland gorilla see its susceptibility because if it ever came into contact with one organism with COVID-19, it could wipe out the entire species, Nweeia said. 1072

RAMONA, Calif. (KGTV) — Ramona Unified School District is alerting parents of what they called a "suspicious" incident at a local elementary school Friday.In a letter home to families, Barnett Elementary School Principal Linda Marthis said a kindergarten student reported the incident took place at the campus' upper playground in front of the school.Marthis did not elaborate on the incident. San Diego Sheriff's deputies arrived and were unable to find evidence to support the student's claims.Out of an abundance of caution, supervisory staff will be "heightened" while students are on the playground and all K classes would have recess on the kindergarten. 668

President-elect Joe Biden pleaded with Americans to adopt public health best practices during the Thanksgiving holiday in the hopes of preventing the spread of COVID-19.Biden called for unity among Americans in attempting to snuff out the spread of the virus."We're at war with the virus. Not with one another. Not with each other," he said.Biden pleaded with Americans to avoid large gatherings over Thanksgiving and added that the nation owed it to essential health care workers, who are currently battling a concerning spike in cases."The federal government can't (fight the virus) alone," Biden said.Biden said he would be celebrating the Thanksgiving holiday in Delaware on Thursday along with his wife, Jill, his daughter and his son-in-law. He added that it would be among the smallest Thanksgiving gatherings the family has had in 40 years.Biden's announcement comes as the U.S. finds itself in a perilous position ahead of the holiday — COVID-19 cases are spiking to levels previously unseen since the pandemic arrived in the country, and health experts fear that large family gatherings across the country could continue to facilitate the spread of the virus.The CDC has recommended that Americans not travel to celebrate Thanksgiving, and Dr. Anthony Fauci has recommended that celebrations be limited to members of a single household.But Americans seem poised to ignore those recommendations. At least one survey says that 1 in 3 parents believe that the benefits of gathering at Thanksgiving outweigh the risk of the coronavirus.Biden's address comes a day after he formally announced who he will nominate for six key administration positions. It also comes a day after President Donald Trump participated in the annual turkey pardon at the White House. 1774