do not have that evidence. >> tonight for the first time in only 20 years, there's a new drug just approved to treat people in the early phases of alzheimer's disease. >> in june, u.s. food and drugs administration green lit add nol, the first new degree approved to treat alzheimer's disease since 2003. according to the fda, the drug can reduce amyloid proteins that block the neural pathways in people with mild disease, but the approval was controversial with many researchers, including the fda's own independent advisory committee saying the evidence simply wasn't there to show it slows down cognitive decline. >> effectiveness is something we don't fully understand just yet. there's a growing concern about a surge of covid-19 cases in tokyo. >> instead of a medal count, we're already trauking the covid count. >> it had already been postponed the previous year, but this summer the tokyo olympic games took place in the midst of the