In today's top stories, Pfizer vaccine has full FDA approval,= but at this stage, the federal government isn't requiring the general public to get vaccinated - here are the institutions issuing Covid vaccine mandates. In other news, Peloton announces $400 price drop on the original Peloton Bike. And finally, the trial of Elizabeth Holmes, the disgraced founder of healthcare startup Theranos is set to begin Aug. 31.