newscientist.com

WkAwX An out-of-control human peptide called bradykinin could be responsible for some of the varied and sometimes deadly symptoms seen in people who have contracted the coronavirus. We already have drugs to control bradykinin, which are being tested as treatments for people with covid-19.
v1Mm7 The biggest lightning flash on record has been identified. More than twice the size of the previous record, it spanned 709 kilometres – about the distance from London to Geneva.
1aygr Grey hairs sometimes regain their colour when we feel less stressed.