Sure, lots of business leaders have big dreams. But when Jennifer Holmgren tells you she wants to turn pollution into both jet fuel and yoga pants, she means it. And she's done it. Her company, LanzaTech, has refined a technology to recycle carbon. And, as she explains, they can pull right up to a super-polluting steel mill and start gobbling up their emissions. Jennifer talks about her long-running quest to keep fossil fuels in the ground, her concerns about the role politics plays, and why - years ago - she said yes to a CEO gig on the eve of retirement.