Matthew Klippenstein is a chemical engineer who has worked at Ballard Power Systems, a fuel cell company based in Burnaby, BC, for 12 years. He provides an overview of fuel cells, describing them as "a battery with an external fuel pack" and an electrochemical analogue to combustion engines. Ballard focuses on proton-exchange membrane fuel cells which operate at milder temperatures than other fuel cell types. Ballard originally worked on fuel cells for automotive applications but now focuses on other markets. Klippenstein encourages engineering students to consider joining the fuel cell industry, as the technology is at an inflection point where production is ramping up after extensive development, providing an opportunity to make an impact in an important