"The international nuclear watchdog warned Japan in 2008 that powerful earthquakes could be too strong for their nuclear reactors, according to a U.S. diplomatic cable released by WikiLeaks Tuesday night."

"Europe's energy chief Tuesday raised the prospect of a nuclear-free future and said the 27-nation bloc is considering 'stress testing' its nuclear power stations to check they can cope with crises."

"If the containment at the nuclear power plant damaged by Japan's devastating earthquake fails, a potential radiation plume from a full core meltdown could reach Tokyo, a U.S. scientists' organization said on Tuesday."

"Japan's nuclear crisis intensified dramatically on Wednesday after the authorities announced that a second reactor unit at the stricken Fukushima Daiichi plant in northeastern Japan may have ruptured and appeared to be releasing radioactive steam."

"The Japanese government reported early Wednesday that a fire was burning at the No. 4 reactor of the troubled Fukushima Daiichi plant in northeastern Japan."

"The warnings were stark and issued repeatedly as far back as 1972: If the cooling systems ever failed at a Mark 1 nuclear reactor, the primary containment vessel surrounding the reactor would probably burst as the fuel rods inside overheated. Dangerous radiation would spew into the environment."

"The chairman of the Nuclear Regulatory Commission was invited to the White House briefing today to assure Americans that they had nothing to fear from the nuclear radiation coming out of Japan's damaged reactors and that the nuclear reactors in the United States were safe. When he was finished taking questions there was very little reassurance on either front." In Japan, residents are beginning to wonder whether they can trust government reassurances that radiation levels present little threat to human health.

"U.S. stocks fell Monday as investors struggled to assess the financial fallout of Japan’s earthquake and tsunami."

"Even as workers race to prevent the radioactive cores of the damaged nuclear reactors in Japan from melting down, concerns are growing that nearby pools holding spent fuel rods could pose an even greater danger."

"Japan’s nuclear crisis verged toward catastrophe after an explosion further damaged one of the crippled reactors and a fire at another spewed large amounts of radioactive material into the air."