TOKYO -- The operator of Japan's crippled nuclear plant halted an emergency operation Tuesday to pump thousands of gallons of radioactive water from a leaking underground storage pool after workers discovered that a similar pool, to which the water was being transferred, was also leaking.
At least three of seven underground chambers at the site are now seeping radioactive water, leaving the Tokyo Electric Power Co. with few options on where to store the huge amounts of contaminated runoff from the makeshift cooling systems at the Fukushima Daiichi nuclear power plant.
Those systems were put in place after a large earthquake and tsunami damaged the plant's regular cooling systems two years ago, causing fuel at three of its reactors to melt and prompting 160,000 people to evacuate their homes.
China bird flu outbreak
MEMPHIS, Tenn. -- China's deadly avian flu outbreak is being driven by at least two closely-related viruses, a situation that may make it more difficult to contain in humans and birds, researchers said.
The H7N9 flu has shown signs of genetic diversity since the first three patients were diagnosed, said Richard Webby, director of a World Health Organization collaborating center for the virus at St. Jude Children's Research Hospital in Memphis.
It already appears more infectious than the H5N1 strain of bird flu that has been circulating since 2003, infecting 600 people and killing 60 percent of them, he said.
5 U.N. peacekeepers killed
UNITED NATIONS -- A force of about 200 unidentified armed assailants ambushed a supply convoy in South Sudan on Tuesday, killing five U.N. peacekeepers , all from India, and seven civilians, U.N. officials said.
The ambush marked the deadliest armed attack on the United Nations since the region became engulfed in intercommunal violence between warring ethnic groups.
Kenyatta pledges unity
NAIROBI, Kenya -- Uhuru Kenyatta pledged to be a president for all Kenyans as he was inaugurated as the East African nation's fourth leader.
The 51-year-old son of Kenya's first president, Jomo Kenyatta, takes office while having to defend himself against charges of crimes against humanity for allegedly fueling ethnic violence that marred elections in 2007.
Coptic pope faults Morsi
CAIRO -- Egypt's Coptic Christian pope, Tawadros II, delivered an unprecedented direct criticism of Egyptian President Mohammed Moris Tuesday after a mob attack on the church's main cathedral, saying he had failed to protect the building and warning that the country is collapsing.
Pope Tawadros' remarks Tuesday in a telephone interview with the private ONTV network were his first direct criticism of Mr. Morsi since he was enthroned in November as the spiritual leader of Egypt's Orthodox Coptic Christians. Christians make up an estimated 10 percent of Egypt's 90 million people.
Thatcher's funeral set
LONDON -- Former Prime Minister Margaret Thatcher will receive a ceremonial funeral next Wednesday in London's St. Paul's Cathedral with full military honors -- the same status as accorded to the Queen Mother in 2002 and Diana Princess of Wales in 1997 -- in recognition of her influence on the nation.