It’s a family affair: Sri Lanka’s protests turn deadly

Demonstrations that eventually ousted the prime minister have cost lives, but the protest mood is not fading: many want every member of the storied Rajapaksa family out of government. We examine an effort to develop undersea GPS and learn why a watery sat-nav would be so useful. And why 1972 was such a formative year for music in Brazil.For full access to print, digital and audio editions of The Economist, subscribe here www.economist.com/intelligenceoffer