Maybe you can do without social media, if your life is already pretty comfortable. But you know what? Some people can't wait for something better to come along. They need social media today. Like organizer DeRay Mckesson.
Organizer and activist DeRay Mckesson says hoping for big change is great, but it doesn't go anywhere without small actions where people take care of one another.
Conceptually, hope feels big, amorphous, hard to define exactly. But for the past few months, "To The Best Of Our Knowledge" producers have been trying anyway. Scientists, activists, futurists, theologians, artists, authors all weighed in on what they think when they hear the word "hope."