Dr. Neeta Ogden spoke with CBSN about a new study that shows how some makeshift face masks may be ineffective, or possibly even worse than no mask at all.
Stocks rose sharply on Wednesday, putting the S&P 500 just below its all-time high set in February, as shares of the major tech companies recovered some of their steep losses from the previous session. The S&P 500 gained 1.4%, its biggest one-day jump since July 6, to close at 3,380.35. […]