Why can't you breathe in Beijing? Why are governments wrangling over the Arctic seabed? Why have we ever more extreme weather worldwide? The answer is fire. Fire in heaters, furnaces, engines and power stations is poisoning air in megacities everywhere. Feeding fire is why governments worry about fuel supplies. Fire produces the carbon dioxide upsetting planetary systems. Fire threatens our future. We think of fire as welcoming. But fire is violent, extreme, rapidly turning resources into wastes, toxic and pernicious. Yet we still rely on fire, even when we need not, and despite the ever...