Apr 3rd 2021 BEIJING WEEKS AFTER a team of experts from China and the World Health Organisation (WHO) conducted a joint inquiry into the origins of covid-19, their report, released on March 30th, gave no clear verdict. It said the most probable explanation was that the virus had jumped from animals to humans through an intermediate animal host. But the scientific search for a definitive answer will remain challenging because of geopolitical tensions and China’s attempts at obfuscation. Listen to this story Your browser does not support the <audio> element.…