Tokyo Electric Power Company (Tepco) today released the latest findings of an ongoing investigation into how the accident at the Fukushima Daiichi nuclear power plant unfolded. Tepco said the findings support measures being taken at the Kashiwazaki Kariwa plant, which it hopes to restart.

The third mission of international experts assembled by the International Atomic Energy Agency (IAEA) has published its final report on decommissioning progress at the damaged Fukushima Daiichi plant in Japan.

Nuclear power benefitted the Japanese economy by some ¥33 trillion over the years, said Masakazu Toyoda of the Institute of Energy Economics, Japan (IEEJ), and the country risks wasting this in its slow progress to restart its reactors.

UPDATED A shape-changing robot began surveying conditions within the primary containment vessel of the damaged unit 1 of the Fukushima Daiichi plant on 10 April. However, the robot stopped working before completing its mission.

Scientists at the Woods Hole Oceanographic Institution have for the first time detected the presence of small amounts of radioactivity from the 2011 Fukushima-Daiichi nuclear power plant accident in a seawater sample from the shoreline of North America.

Initial results from using a muon detection system at the damaged Fukushima Daiichi unit 1 in Japan appear to confirm that most of the fuel has melted and dropped from its original position within the core, Tokyo Electric Power Company announced.

More than 90% of the contaminated water stored on the Fukushima Daiichi site will be treated by the end of May, two months later than originally planned, Tokyo Electric Power Company (Tepco) announced today.

The transfer of radioactive soil and waste generated from clean-up work following the March 2011 accident at the Fukushima Daiichi plant to a provisional storage site has been approved by the governor of Fukushima prefecture and the mayors of Futaba and Okuma.

Significant tasks have been completed in the clean-up and decommissioning of the damaged Fukushima Daiichi nuclear power plant, an international expert mission has concluded. However, it says many challenging issues remain.

Tepco hopes to gain a greater understanding of the location of the molten fuel in unit 1 of the damaged Fukushima Daiichi with the installation of a muon detection system. A shape-changing robot will also soon be deployed to explore within the unit's reactor.

Operations have resumed at all three of Tokyo Electric Power Company's (Tepco's) nuclear power plants in Japan following the deaths of two contractors last month in industrial accidents. The company has introduced measures to improve worker safety at its sites.

The interim storage of contaminated soil and other wastes generated by decontamination efforts at Japan's damaged Fukushima Daiichi plant and surrounding area will begin in March, the environment ministry has said.