Treating the coronavirus: improvising now, but with real hope on the horizon; ‘Parentese’ is not just baby talk. It boosts baby’s language skills; Gunshot-loud underwater clapping could be how grey seals intimidate rivals and attract mates; New implantable nerve guide tricks severed nerves into growing together again; Pathway to Mars — Can we get astronauts to Mars sane and healthy?; Has smoke and soot from the Australian wildfires made its way to the Antarctic?