The Premier said Melbourne's restrictions could be eased more than expected on Monday. But from an outbreak-management perspective, we should be careful of easing too soon.
A preliminary study published online this week estimates Australia had 60,000 undiagnosed COVID-19 infections by July. But there are a range of limitations to the study.
Considering what we know about the key ingredients for life's formation on Earth, here are three explanations for how this process may have occurred on our sister planet.