has been the case worldwide because of accidents like the Chernobyl disaster, but Australian concerns have also involved specific local factors such as controversy over the health effects of nuclear testing in Australia and the South Pacific, and the emergence of prominent anti-nuclear campaigners Helen Caldicott and Tilman Ruff, who are medical practitioners. The economics of nuclear power has been a factor in anti-nuclear campaigns, with critics arguing that such power is uneconomical in Australia, particularly given the country's abundance of coal resources. According to the anti-nuclear movement, most of the problems with nuclear power today are much the same as in the 1970s. Nuclear reactor accidents still occur and there is no convincing solution to the problem of long-lived radioactive waste. Nuclear weapons proliferation continues to occur, notably in Pakistan and North Korea, building on facilities and expertise from civilian nuclear operations. The alternatives to nuclear power, efficient energy use and renewable energy (especially wind power), have been further developed and commercialised. Public opinion A 2009 poll conducted by the Uranium Information Centre found that Australians in the 40 to 55 years age group are the "most trenchantly opposed to nuclear power". This generation was raised during the Cold War, experienced the anti-nuclear movement of the 1970s, witnessed the 1979 partial meltdown of the Three Mile Island reactor in the US, and the 1986 Chernobyl disaster. It was the generation which was also subject to cultural influences including feature films such as the "nuclear industry conspiracies" The China Syndrome and Silkwood and the apocalyptic Dr Strangelove. Younger people are "less resistant" to the idea of nuclear power in Australia. Analysis of opinion polls from 2012 shows a "significant decrease in favourable views of nuclear power" following the Fukushima Daiichi nuclear disaster. Indigenous land owners have consistently opposed uranium mining and have spoken out about the adverse impact it has on their communities. The British nuclear tests at Maralinga were found to have left significant radiation hazards in land given back to the Maralinga Tjarutja people, and the issue continues to cause indigenous opposition. Active groups Individuals There are several prominent Australians who have publicly expressed anti-nuclear views: Dorothy Auchterlonie Sandra Bloodworth David Bradbury (film maker) Bob Brown Eileen Kampakuta Brown Kevin Buzzacott Helen Caldicott Joseph Camilleri Moss Cass Ian Cohen Michael Denborough Mark Diesendorf Jim Falk Malcolm Fraser Peter Garrett Jim Green (activist) Margaret Holmes Avon Hudson Jacqui Katona