Japan has restarted its first nuclear reactor in over three years, despite major concerns over its safety and widespread public opposition to Japan’s continued use of nuclear power. Energy experts say the government is not heeding the lessons of the devastating triple disaster of 2011, which killed nearly 20,000 people after a 9.0 magnitude earthquake triggered a tsunami and a nuclear meltdown at the Fukushima power plant. Some residents still remain displaced, 10 years later.