The World’s biggest economies set to prepare massive investment in nuclear energy. The most elusive energy, which was discarded in 1992 Earth Summit as ‘not safe and sound’ energy, has been touted as the best alternative for the energy-crunch world in recently concluded Group of Eight (G- 8) Summit meeting at St. Petersburg, Russia. After shock waves of Three Miles and Chernobyl accidents, the nuclear energy is back to reduce the greenhouse gas emissions, the root cause of climate change.