hollar: tonight on "revolutionaries"... hoke: they separate because our people with criminal histories are scared of the executives, are intimidated. and the executives are afraid of the stereotypes of people with criminal histories. and so we are very intentional about breaking the ice to make sure it doesn't stay like a junior-high dance. hollar: catherine hoke gives new meaning to the word "revolutionary." her bold approach to investment is giving new life and new hope to convicted felons with original business ideas. it's venture capitalist catherine hoke in conversation with npr's laura sydell.

hollar: tonight on "revolutionaries"... holmes: to me, there was nothing more valuable than being able to change the reality in our world, which is that all too often people we love are lost because you find out too late in the disease-progression process to be able to do anything about it. hollar: elizabeth holmes dropped out of stanford at 19 to start a biotech company. today that company, theranos, is worth billions and still under the radar. meet this groundbreaking scientist and founder, elizabeth holmes, in conversation with kqed's michael krasny. major funding for "revolutionaries"

hollar: tonight on "revolutionaries"...metty: i think, in my own career, i've worked globally, i've worked locally. i was able to run industries, and i was able to run technology. i was able to do start-ups, and i was able to scale businesses. you know, that's a lot of things to do in one place. hollar: one technology company has survived and grown through a century of dramatic change. that company is ibm, and its leader is ginni rometty. tonight, we talk with ibm's chairman and c.e.o. about the company's storied history and her vision for a challenging future.

. >> sam saunders is the co-owner of hollar and saunders.has been selling spanish coloni colonial antiques for 35 years. >> it started out as a hobby of just collecting beautiful things from mexico and it became a business and we started traveling to south america and then, following the colonial trade routes around the world. >> sam said in some ways his business mirrors the fruit distributors. >> we sell a lot on the internet, especially if people have been here before and know the quality of the pieces and we have a virtual store on first dibs. that has become half the business. >> how much would that sell for? >> $1200 to $1500. >> right, they are gorgeous. >> alex is also part of a third generation business. her grandfather, paul bond founded this custom made boot company, he was a well known rodeo star, his boots were highly sought after. >> where are most of your customers? >> all over the world. all over the u.s., we work with people in japan and europe. >> do you deal with mexico at all in. >> yeah, not really at all. so the fact th