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The gunman's sister was one of nine people killed in a shooting early Sunday in downtown Dayton, Ohio, police said.At least 27 others were injured when Connor Betts, 24, fired an assault rifle in a popular nightlife district about 1 a.m., authorities said.Betts fired for less than a minute from a ".223 high-capacity" gun, and he had additional magazines with him, Mayor Nan Whaley said. The .223 caliber is used in rifles like the AR-15 assault rifle used in previous mass shootings.Deb Decker, public information officer for Montgomery County, said the shooter used an assault rifle.The event happened 13 hours after a 634

The NCAA announced on Wednesday that the upcoming men's and women's basketball tournaments will be played without spectators.Earlier on Wednesday, the NCAA's panel on the coronavirus recommended that all athletic competitions be played without spectators due to coronavirus fears. NCAA President Mark Emmert issued the following statement: "The NCAA continues to assess the impact of COVID-19 in consultation with public health officials and our 458

The Centers for Disease Control and Prevention said on Friday that 48 additional cases of Salmonella illnesses since July 3 tied to pig ear dog treats. Overall, the number of reported Salmonella cases has increased to 93. The CDC's previous July advisory has led to some products being pulled from shelves, and a recall. On July 3, 344

Temperatures in Colorado plunged 64 degrees on Thursday, the largest temperature drop the state has ever seen in October.It's also the 15th largest temperature drop over a two day period in Denver's history, according to 232

The 2019 Nobel Prize for Medicine has been jointly awarded to William Kaelin Jr., Sir Peter Ratcliffe and Gregg Semenza for their pioneering research into how human cells respond to changing oxygen levels.Announcing the prize at the Karolinska Institute in Stockholm on Monday, the Nobel committee said that the trio's discoveries have paved the way for "promising new strategies to fight anaemia, cancer and many other diseases."The 2019 medicine laureates, the committee added, have identified molecular machinery that regulates the activity of genes in response to varying levels of oxygen.The importance of oxygen has long been established, the committee explained, but how cells adapt to changes in its levels remained unknown.Randall Johnson, prize committee member, described the trio's work as a "textbook discovery.""This is something basic biology students will be learning about when they study, at aged 12 or 13, or younger, biology and learn the fundamental ways cells work. This is a basic aspect of how a cell works and, from that standpoint alone, it's a very exciting thing."The winnersNew York-born Kaelin established his own research laboratory at the Dana-Farber Cancer Institute in Boston and became a full professor at Harvard Medical School in 2002.Semenza, also born in New York, became a full-time professor at Johns Hopkins University in 1999 and since 2003 has been the Director of the Vascular Research Program at the Johns Hopkins Institute for Cell Engineering.Ratcliffe, who was born in Lancashire, England, studied medicine at Cambridge University and established an independent research group at Oxford University, becoming a full professor in 1996. 1694