US celebrities called for a boycott to take place Friday -- one of the busiest US shopping days -- to protest a grand jury's decision not to prosecute a police officer who fatally shot a black teen. A number of well-known figures, among them hip-hop mogul Russell Simmons, have signed onto the action, under the Twitter hashtags #NotOneDime and #BlackoutBlackFriday. Also backing the campaign were TV star Jesse Williams and celebrated journalist Soledad O'Brien, among others. So let's talk to 'em," Williams tweeted, along with a link to a video compilation of police brutality.
Researchers say they are one step closer to developing an Ebola vaccine, with a Phase 1 trial showing promising results, but it will be months at the earliest before it can be used in the field. The news comes amid the worst ever outbreak of the hemorrhagic fever, which has killed 5,500 people so far, mostly in West Africa. In the first phase of testing, all 20 healthy adults injected with a higher or lower dose of the vaccine developed antibodies needed to fight Ebola, said the National Institutes of Health (NIH), which conducted the study. "The unprecedented scale of the current Ebola outbreak in West Africa has intensified efforts to develop safe and effective vaccines," said Anthony Fauci, head of the National Institute of Allergy and Infectious Diseases, which is developing the vaccine alongside GlaxoSmithKline.