Toronto Star: In exactly one month, for exactly one hour, Toronto will turn off the lights. It is a purely symbolic gesture, as easy as the flick of 5.8 million switches – the number of light bulbs Torontonians are estimated to have turned off last year. But if Earth Hour lacks a practical solution to climate change, it compensates with sheer numbers. “People have started equating it with the World Cup or Live Nation,” says Tara Wood, of World Wildlife Fund, Earth Hour’s organizers. “But for …