Greenpeace is opposed to nuclear power because it views it as "dangerous, polluting, expensive and non-renewable". The organization highlights the Chernobyl nuclear disaster of 1986 and Fukushima nuclear disaster of 2011 as evidence of the risk nuclear power can pose to people's lives, the environment and the economy. Greenpeace views the benefits of nuclear power to be relatively minor in comparison to its major problems and risks, such as environmental damage and risks from uranium mining, nuclear weapons proliferation, and unresolved questions concerning nuclear waste. The organization argues that the potential of nuclear power to mitigate global warming is marginal, referring to the IEA energy scenario where an increase in world's nuclear capacity from 2608 TWh in 2007 to 9857 TWh by 2050 would cut global greenhouse gas emissions less than 5% and require 32 nuclear reactor units of 1000 MW capacity built per year until 2050. According to Greenpeace, the slow construction times, construction delays, and hidden costs all negate nuclear power's mitigation potential. This makes the IEA scenario technically and financially unrealistic. They also argue that binding massive amounts of investments on nuclear energy would take funding away from more effective solutions. Greenpeace views the construction of Olkiluoto 3 nuclear power plant in Finland as an example of the problems on building new nuclear power.