Is this brown sludge the future of fuel? It used to be garbage, but now a Danish energy company wants to turn it into ethanol, and other biofuels. Find out more in our latest Technology Podcast with host Clark Boyd.
Clark Boyd works as Senior Producer and Reporter for The World. On the production side, he's responsible for helping craft the overall sound of the daily show. On the reporting side, he'll take a sideways glance at just about any topic.