Nuclear energy is still controversial in Japan following the Fukushima disaster, but the country's new prime minister is a supporter.
China plans to store the glass nuclear waste deep underground as the country ramps up its nuclear power industry.
Last month, Chinese authorities sought to downplay the problem, saying minor fuel rod damage was to blame for radioactive gases that had built up at the site.
A French company that partly owns and helps operate the plant claimed the radiation limits were above French safety standards, CNN reported.
Nuclear cooperation between the U.S., Israel, the UAE and Saudi Arabia could help prevent a cascade of Middle Eastern nuclear proliferation.
The Dutch National Institute for Public Health and the Environment said the radioactive substances were man-made.
Researchers believe an incident at a nuclear reprocessing plant in central Russia was the cause, though Russian officials have always denied involvement.
The controversial floating power plant will be towed through the Baltic Sea and narrow European straits to get to the Arctic.
Naples Mayor Luigi de Magistris said his "City of Peace" was no place for nuclear weapons or nuclear-powered vessels.
"This is the first time an ecosystem has been found to survive directly on the basis of nuclear energy."
The work reflects "the duality of creation and destruction as well as the beauty and disaster that our civilization has created."
The estimated cost of the long-term cleanup following the nuclear disaster is $192 billion.
Japan's "Little Sunfish" brought back never-before-seen footage of the Fukushima nuclear plant, which has claimed a number of prior devices.
How much harm could 777,000 tons of water laced with tritium, a nuclear byproduct, do to the environment?
The moral dimensions of the waste must increasingly be considered at the international level. We cannot simply step back and hope global market mechanisms will solve the problem
The country's former energy minister secretly signed an agreement with Russia's state nuclear firm in 2014.
Trump said the United States has "fallen behind on nuclear weapon capacity." He pledged to ensure that, "We're going to be at the top of the pack."
On April 26, 1986, a botched test at the nuclear plant in then-Soviet Ukraine triggered a meltdown.
Levels of the radioactive isotope tritium 200 times higher than normal were found in Biscayne Bay.
The Belgian prosecutor has confirmed reports of the find in searches after November 13.
An escalating dispute between Iran and the U.S. centers on the types of missile that the Islamic Republic is allowed to develop.
A 54 centimeter robot with a scorpion-like tail will be sent inside one of Fukushima's reactors this August.