麻豆约拍

On Monday, the world heard how the UK's Covid vaccine - from AstraZeneca and Oxford University - was highly effective in advanced trials. But on Thursday, multiple news outlets in the UK and US reported that there were questions over the data. The FT鈥檚 Donato Paolo Mancini explains the concerns. Also in the programme, the price of the digital currency Bitcoin slumped today after rallying through the year. Billy Bambrough, who writes about Bitcoin and other cryptocurrencies for Forbes, explains why the currency can be so volatile.