The US is finally starting to take a sensible and proactive approach towards the Covid-19 pandemic. After a disastrous initial failure, coronavirus testing has now risen to levels similar to or higher than South Korea. Meanwhile, although he almost succumbed to the temptation to reopen the economy before shutdowns had time to quell the epidemic, President Donald Trump has wisely ...

To have any idea whether our current social distancing efforts in the United States are helping slow the spread of coronavirus, and to gauge how long we should go on this way, scientists need to know how many people have mild or asymptomatic cases of Covid-19. There could be many such people. Since their symptoms are vague and possibly non-existent, ...

It’s not just manufacturing that’s struggling with disrupted logistics. As more countries bring down the shutters to limit the spread of the coronavirus, risks are rising for the world’s complex food supply networks. Snarl-ups in processing and transport could result in painful price spikes for many fresh goods, even if farms in developed markets can keep working through the outbreak. ...