Afghanistan, using Solar Technology to increase the yield of their crops and the worlds supply of heroin. Hello and welcome to the programme. The total confirmed number of covid 19 cases worldwide has now reached more than 16 million. The number of new cases has gone up than 16 million. The number of new cases has gone up by1 million injust four new cases has gone up by1 million in just four days. In the last 2a hours there have been more than 55,000 new infections in brazil. United states are still the hardest hit states are still the ha rdest hit country, with 53,000 new cases. Infections have risen rapidly in india to more than 118,000. We will have more than 118,000. We will have more on those figures in a few moments. But first, a prominent microbiologist who diagnosed early coronavirus cases in china has told the bbc he believes local officials covered up the scale of the initial outbreak. Professor kwok yung yuen, who was part of an Investigation Team in wuhan injanuary, an Inve