Mercury: POLITICIANS are falling over themselves to be seen as far-sighted on climate change. Premier Paul Lennon plans to cut carbon emissions by 60 per cent by 2050. The Greens say that is nowhere near enough. As the debate heats up, the talk is of deeper and deeper cuts but how deep can we go? A few months ago federal Labor’s pledge to deliver a 60 per cent cut in emissions by 2050 was considered radical and risky to the economy. Now the Greens say it is already out of date and …