U.S. judge blocks Trump administration's ban on new TikTok downloads

Reasons to hope for a Covid-19 vaccine

The first coronaviruses known to infect humans were discovered more than half a century ago – so why are there no vaccines against these viruses? Should we be optimistic that an effective vaccine will be developed now? SARS-CoV-2, the recently discovered coronavirus that causes Covid-19, is similar enough to other coronaviruses, so scientists make predictions […]