Two Hollywood music producers explain the science behind your favorite pop hits, an inventor shares how they engineered a sweet twist on ice cream, and a NASA roboticist explains what it takes to drive the Mars Curiosity rover. LaurDIY shows how to make colorful "Liquid Lava" at home.

An engineer with an exciting double life, a dynamic researcher leads a scavenger hunt to find the environmental factors affecting our neighborhoods, and two NASA scientists searching for the origin of life. LaurDIY makes kinetic sand.