In Japan, an alleged cover up of radiation data by the Japanese government has come to light.
Tokyo has expressed regret for not promptly disclosing some important results of radiation monitoring .. conducted near the Fukushima Daiichi nuclear plant soon after the accident on March 11th.
A reading one day after the massive earthquake and tsunami, . showed that radioactive tellurium was detected 7 kilometers away.
Tellurium is produced during the melting of nuclear fuel.
The government also failed to disclose the high radiation levels in weeds 30 to 50 kilometers from the plant.
On March 15th, 123 million becquerels of radioactive iodine-131 per kilogram were detected 38 kilometers northeast of the plant.
But the government's Nuclear and Industrial Safety Agency reported at a news conference several hours later that the nuclear fuel was intact.
The agency says it deeply regrets not releasing the data.
Professor Yasuyuki Muramatsu of Gakushuin University says radioactive iodine has a high effect on children.
He says if the data had been released earlier, more measures could have been taken to protect them from exposure.