Empathy is a popular concept today. Everyone, from relationship counselors to business leaders to ecological activists are talking about it. But, what is it? It is the imaginative act of stepping into another person's shoes and viewing the world from their perspective - truly understanding where the other person is coming from. In this age of income inequality, climate change and global poverty, empathy can lead to radical social change. Watch this TEDx talk by â€‹Roman Krznaric, in which he illustrates the kinds of political changes that can come from mass "empathic flowering" and gives us eight ideas to start a global empathy revolution.