The first doses of Johnson & Johnson’s Covid-19 vaccine are expected to go into arms within 24 to 48 hours. » Subscribe to NBC News: http://nbcnews.to/SubscribeToNBC » Watch more NBC video: http://bit.ly/MoreNBCNews NBC News Digital is a collection of innovative and powerful news brands that deliver compelling, diverse and engaging news stories. NBC News Digital features NBCNews.com, MSNBC.com, TODAY.com, Nightly …

NBC News’ Rehema Ellis and former NASA astronaut Dr. Mae Jemison talk about her experience as the first African American woman in space. Dr. Jemison highlights including new perspectives in the continued study of science, and aspiring astronaut Taylor Richardson explains how Jemison inspires her as a young woman. » Subscribe to NBC News: http://nbcnews.to/SubscribeToNBC » Watch more NBC video: …

Nikki Haley calls out Democrats’ ‘cancel culture’, defends Pres. Trump at the first night of the Republican National Convention. RELATED: https://bit.ly/3lit6cC » Subscribe to USA TODAY: http://bit.ly/1xa3XAh » Watch more on this and other topics from USA TODAY: https://bit.ly/2FBz2NT » USA TODAY delivers current local and national news, sports, entertainment, finance, technology, and more through award-winning journalism, photos, videos and …