Australian Trade Minister Craig Emerson on Tuesday said environmental activists were living in \"fantasy land\" after a plan to disrupt the country\'s coal export boom was leaked to the media. Greenpeace is spearheading a multi-million dollar campaign to disrupt and delay key projects and infrastructure by eroding public support for the industry while funding legal challenges against controversial projects. The plan also involves exploiting opposition to coal-seam gas to put pressure on governments to block mining, The Australian reported, citing confidential documents. Australian resources, including coal, are in big demand from developing countries such as India and China as they build power projects to fuel their fast-growing economies. But environmentalists are concerned about the impact of the boom on farmland and groundwater aquifers as land is increasingly used for mining, as well as the consequences for climate change. \"If we fail to act decisively over the next two years, it will be too late to have any chance of stopping almost all of the key infrastructure projects and most of the mega-mines,\" the Greenpeace-led coalition says. It added that it was seeking investment \"to help us build a nationwide coal campaign that functions like an orchestra with a large number of different voices combining together into a powerful symphony\". Emerson said the concept was \"recklessly irresponsible\". \"The idea of flicking a switch from coal and other fossil fuels to renewable energy cannot be done,\" he said. \"We would have a global depression if we just said \'that\'s it, we\'re out of coal, we are just going to move to renewable energy\' just because they believe that is good for the world. \"It would mean mass starvation and they ought to wake up to that, instead of living in a fantasy land and organising these sorts of campaigns.\" The trade minister said Australia was tackling issues of concern by putting a price on carbon pollution from July 1. From that date, a levy of Aus$23 (US$23.80) per tonne of carbon pollution will apply before the country moves to an emissions trading scheme in 2015. \"We\'re committed to the future of coal mining in this country,\" Emerson said.