What do a Venus fly trap, an earwig's wing and a grasshopper's leg have in common? They are all natural examples of energy being stored in one state and effortlessly changed to another. 

RAZOR's Shini Somara talks to Andres Arrieta, an engineer who is trying to develop materials that can do the same thing. 

Arrieta leads the Laboratory of Programmable Structures at Purdue University in the U.S. and is developing "metamaterials" – engineered materials that aren't naturally occurring and which are made from assembling multiple elements from composites such as metals and plastics. 

He explains how he's taking lessons from nature to help innovate in fields as diverse as architecture, aviation and robotics.