Tristan Walker stands out in Silicon Valley.
Walker is black. Silicon Valley, for the most part, isn't: Research shows that only about 1 percent of tech entrepreneurs in that section of Northern California are African-American.
"There just aren't as many folks who look like me in the industry," the 29-year-old told All Things Considered host Audie Cornish.
Image Courtesy of stockimages / FreeDigitalPhotos.net