Los Angeles (AFP) – A heatwave was bringing unseasonably high temperatures to California on Thursday, sending sun-worshippers to the beach, but also sparking a brushfire. Forecasters issued a heat warning for the most populous US state through to Sunday, warning the mercury could hit a height-of-summer 90 Fahrenheit (32 Celsius) in Los Angeles, well above the average for winter. California, in common with much of the western United States, is enduring a historic drought and wild swings in weather that scientists say is exacerbated by man-made climate change. “If you warm the planet, you’re goi…