A mind-boggling 40,000 trillion becquerels of radioactive cesium, or twice the amount previously thought, may have spewed from the crippled Fukushima No. 1 nuclear power plant after the March 11 disaster, scientists say.
Scientists: Far more cesium released than previously believed
Workers begin pouring cement onto the seabed at the Fukushima No. 1 nuclear power plant on Feb. 28. (Eiji Hori)






