When Singapore decided to close schools in its battle against the Covid-19s pandemic, education minister Ong Ye Kung had something extra in his portfolio to help him help students stay upbeat – a Yale University course on the “science of happiness”. “It was an eye opener, and helped me understand the challenges students are facing today, which youths of previous generations might not have encountered,” he said. Ong joined millions of people from more than 160 countries who have signed up for…