Luiz Inácio Lula da Silva left office with a sky-high approval rating, having raised millions from poverty—but was then convicted of corruption. Now he wants his old job back. Forced labour in Uzbekistan’s cotton fields, once widespread, is swiftly vanishing. And an old hypothesis confirmed: birds get more colourful the closer they live to the equator.For full access to print, digital and audio editions of The Economist, subscribe here www.economist.com/intelligenceoffer See acast.com/privacy for privacy and opt-out information.