Australian Broadcasting Corporation: The Greens have warned that ignoring the threat of climate change will send the world into an economic tailspin far greater than that of the global financial meltdown. The Opposition is arguing the Government should delay introducing an emissions trading scheme until the economic crisis eases. But Greens Leader Bob Brown has told a rally in Canberra the Government cannot sideline its response to climate change. “I would say to Kevin Rudd, listen to the people of …