The U.S. Food and Drug Administration on Thursday authorized the sale of the country’s best-selling e-cigarette. The agency’s decision only applies to several tobacco-flavored versions of the reusable product, sold as Vuse. In January 2023, the FDA rejected R.J. Reynold’s application for its more popular menthol flavor, but the company has challenged that ruling in…  read on >  read on >

Cancer growth can be fueled by flecks of ancient viral DNA lodged into the genetics of modern humans, a new study says. Overall, about 8% of the human genome is made of bits of DNA left behind by viruses that infected our primate ancestors, researchers say. Called “endogenous retroviruses,” these DNA fragments have long been…  read on >  read on >

Alix Popham played in two rugby World Cups and won a Six Nations Grand Slam before retiring in 2011 as a professional in the rough-and-tumble game. By 2020, he had already been diagnosed with early onset dementia and probable chronic traumatic encephalopathy (CTE), a disabling brain disease long linked to repeated head trauma. Emboldened to…  read on >  read on >