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  Ever since the first cases of COVID-19 were identified in Wuhan, China in December 2019, researchers have been scrambling to develop an effective vaccine. And, according to the nation's top infectious disease expert,   Dr. Anthony Fauci , by the end of the year we should know whether or not a vaccine will be ready for distribution by early 2021. Read on, and to get through this pandemic at your healthiest, don't miss these   Sure Signs You've Already Had Coronavirus . In a new interview with UK's  The Times , Fauci revealed that the trials currently underway in the United States will rear results by November, and we should have a good idea of their safety and efficacy. "The way the pace of the enrollment is going on and the level of the infections that are going on in the United States, it is likely that we'll get an answer by the end of the year," he explained. "I would say a safe bet is at least knowing that you have a safe and effective vaccine b...

By: Tanya Lewis  Published: 03/02/2015 07:09 PM EST on LiveScience Good news for people who drink coffee every day: Consuming a moderate amount of coffee could lower the risk of clogged arteries that can lead to a heart attack, a new study finds. The study of healthy young adults in Korea found that, compared with people who didn't  drink coffee , those who drank three to five cups of java per day had a lower risk of having calcium deposits in their coronary arteries, which is an indicator of  heart disease . (The coronary arteries are the vessels that bring oxygenated blood to the heart muscle itself.) The study participants who drank three to four cups had the lowest risk of developing clogged arteries seen in the study, said Dr. Eliseo Guallar, an epidemiologist at Johns Hopkins University Bloomberg School of Public Health in Baltimore, Maryland, and co-author of the study published today (March 2) in the journal Heart. "But the risk went down with jus...

What's the  average penis size ? The results are in, and they show it takes less to be well-endowed than you might think. The  average length of an erect penis  is 5.16 inches (13.12 centimeters) and the average circumference is 4.59 inches (11.66 centimeters), according to a new analysis of penis length studies involving more than 15,000 men around the world. As for a flaccid penis, the average length is 3.61 inches (9.16 centimeters) and the average circumference is 3.66 inches (9.31 centimeters). It looks like  Jonah Falcon  is an even bigger outlier than we realized... The British researchers behind the analysis say theirs is the  first systematic review of penis size measurements . "We wanted to be able to help men and their doctors with a definitive paper since there are many contradictory reports from small or poor quality studies," study co-author Dr. Gordon Muir, a urological surgeon at King’s College Hospital NHS Foundation Trust in Lon...

If the European Space Agency's Rosetta spacecraft was a groundhog, we would all be worrying about six more weeks of winter right now. As it is, it's always winter on Comet 67P/Churyumov-Gerasimenko. The comet is frigid, coming in at -94 degrees Fahrenheit. The ESA released an image Tuesday of the comet-orbiting Rosetta leaving a fleeting mark on the comet: its shadow. The space agency describes it as being "encircled in a wreath of light." It was a rare confluence of circumstances that enabled the image to exist as the sun, spacecraft and comet all came into alignment. RELATED STORIES Rosetta buzzes comet for close-up of craggy surface Official Rosetta image reveals comet's true colors Rosetta's comet is singing, and it sounds like Predator The shadow is diffuse, rather than sharp. The  ESA explains this by noting , "If you were standing on the surface with Rosetta high above you, there would be no place in the shadow where the entire Sun wo...

Bobby Brown is denying reports his family is involved in a new reality show related to Bobbi Kristina Brown’s coma crisis. “There is no Brown family reality show that is in production which chronicles Bobby Brown, Bobbi Kristina or the medical emergency she presently faces at Emory Hospital,” Bobby Brown’s lawyer Christopher Brown said in a statement to the Daily News.

NBC News is bringing in new leadership after several high-profile stumbles, according to a senior executive familiar with the situation. Andrew Lack, a former president of NBC News, is in advanced talks to take a senior role in the division, the person said, and Patricia Fili-Krushel, chairman of NBCUniversal News Group, is expected to step down and take a different position at NBCUniversal, a unit of  Comcast Corp. Meanwhile, Deborah Turness, the president of NBC News, is expected to remain in the division, although her role could change as well.