How not to be ignorant about the world | Hans and Ola Rosling
档案导读
Hans Rosling and his son Ola run an audience quiz with global population, health and income data to show how wrong most people are about the world. Ola then gives four ways to get less ignorant.
档案英文原文 · 来自 HackerTube 开放档案，暂未收录字幕分析。