Scientists trying to understand the people COVID-19 can’t touch; Trapping light earns physicist Sajeev John Canada's most prestigious science prize; Glitter comes in many colours, but this scientists is making a green alternative; NASA is smashing a spacecraft into an asteroid to test a planetary defense system; Why 'Useful Delusions' can sometimes make us vulnerable to misinformation; Why are mosquitoes larger in the spring than in the fall?