Pope Francis speaks in a video at the TED2017 conference Tuesday in Vancouver, British Columbia. The audience gave him a standing ovation after the talk, which stressed the importance of humility among the powerful.
Ryan Lash /TED
Raj Panjabi knows what health care can be like in a developing country. As a boy in Liberia he never had his eyes checked. When he came to the U.S. at age 9, he found out he had 20/80 vision.
Last Mile Health
Richard Turere speaks at the TED2013 conference in Long Beach, Calif. With a simple invention, the Kenyan teen figured out a way to keep cows and their predators safe.
James Duncan Davidson