This Earth Hour, March 24 at 8:30 p.m. local time, switch off your lights to draw attention to wildlife loss. In Canada, populations of more than one-half of monitored species have already declined by 83 per cent on average since 1970. Globally, we’re on track to lose 67 per cent of wildlife populations by 2020. The causes? Habitat loss, pollution, unsustainable harvest, invasive species and climate change, which risks sending one in six species to extinction. This year, when you turn out the lights, show that you want to reverse the decline of wildlife.