Some of the pictures in 'The Human Face of Big Data' will bring tears to your eyes; others are so surprising or memorable that you just have to show them to your friends and family.

Every time there's a new tool, whether it's Internet or cell phones or anything else, all these things can be used for good or evil. Technology is neutral; it depends on how it's used.

My dad was actually against me being a photographer. He thought it was a dead-end job and that you end up doing baby pictures and weddings.