decimal system Excellent 1966 Australian PSA on the switch from £sd to decimalized currency Mark Frauenfelder
explainer videos What happens when you shoot a Nerf bullet backward while driving the bullet's speed Mark Frauenfelder
retrofuturism This 3D animation shows you what's inside Seattle's famous Space Needle Mark Frauenfelder
explainer videos Here's Kurzgesagt – In a Nutshell's explainer video about COVID-19 Mark Frauenfelder