Fast-food workers across the country protested their low pay this week, while President Obama decried the nation's growing wealth gap, calling it "the defining challenge of our time." Meanwhile, the nation's capital city passed a new minimum wage law.
Las Vegas-based Moon Express just unveiled the design for a small robot spacecraft about the size of a coffee table that it says could move about the moon's surface powered only by solar panels and hydrogen peroxide.
Most revolutionary political figures consider compromise a dirty word and a sign of weakness. Yet Mandela consistently preached pragmatism, and many of his defining moments involved acts of flexibility, reconciliation and magnanimity.