Nature: Brazilian president Dilma Rousseff survived an unexpectedly strong challenge from a prominent environmentalist to stay in office. Now, less than three months into her second term, Rousseff has sparked controversy by appointing an avowed climate-change sceptic as science minister.
The choice of Aldo Rebelo, a Communist law-maker who last July called the idea of global warming incompatible with current knowledge, follows a decade in which Brazil has slowed Amazon deforestation and claimed a leadership...