During an interview with Xeni Jardin at Maker Faire, Sean Riley of World’s Toughest Fixes explains the invisible importance of heavy infrastructure and the big repairs that come with them  (Image via sfgate.com)

During an interview with Xeni Jardin at Maker Faire, Sean Riley of World’s Toughest Fixes explains the invisible importance of heavy infrastructure and the big repairs that come with them  (Image via sfgate.com)