Patrick Moore also reversed his position on nuclear power in 1976, first opposing it and now supporting it. In Australian newspaper "The Age", he writes "Greenpeace is wrong—we must consider nuclear power". He argues that any realistic plan to reduce reliance on fossil fuels or greenhouse gas emissions need increased use of nuclear energy. Phil Radford, Executive Director of Greenpeace US responded that nuclear energy is too risky, takes too long to build to address climate change, and claims that most countries, including the U.S., could shift to nearly 100% renewable energy while phasing out nuclear power by 2050.