Mackenzie Cowell is one of the founders of DIYbio.org. He is featured in the most recent of our ongoing series of video interviews with notable makers, sponsored by Dow chemical, over at elementsofhumanity.com. Mac is a big advocate, not just of the fledgling discipline of synthetic biology (or “biological engineering,” as it’s coming to be known), but of the idea that amateurs, hobbyists, and so-called “citizen scientists” have a meaningful role to play in its development. Check it out.