Making plastic out of potatoes; Barbosa Rocks uses s'mores to explain the Earth's plate tectonics; a computer engineer combines STEM with her passion for dance through LED dance outfits; a sand experiment shows how to "see" sound waves.

A structural engineer makes buildings as sensitive as humans; what makes gems so unique; why scary movies make palms sweaty; permafrost experts show ancient finds presrved in layers of soil and ice for thousands of years.