Canadian Press: Hong Kong’s leader said Wednesday he aims to cut the city’s greenhouse gas emissions by up to 33 per cent by 2020 with a shift from fossil fuels to nuclear energy, but environmentalists warned about the dangers of nuclear waste. Donald Tsang announced the target — based on 2005 pollution levels — in his annual policy speech. Poor air quality is a frequent complaint of residents of this densely populated financial hub whose stunning skyline is often obscured by smog. For …