explainer videos Beautiful 3D animation compares sizes of the 80 known moons of Jupiter with Manhattan Mark Frauenfelder
explainer videos Almost everything you want to know about wheels is in this 1966 explainer movie Mark Frauenfelder
explainer videos An entertaining video about reclaiming lithium batteries in discarded vape pens Mark Frauenfelder
australia Excellent 1966 Australian PSA on the switch from £sd to decimalized currency Mark Frauenfelder
physics What happens when you shoot a Nerf bullet backward while driving the bullet's speed Mark Frauenfelder