ScienceWeekly roundup — COVID-19 & aging brainsTo play this audio please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoScienceConor Dillon | Gabriel Borrud06/16/2021June 16, 2021Will mutations change our vaccination strategy? Also, a controversial step in the fight against Alzheimer's, and how to tell a six-year-old what a quantum computer is.https://p.dw.com/p/3v2f1Advertisement