September 17, 2005 |
Carbon-14 fallout from above-ground nuclear weapons testing in the 1950s is embedded in tooth enamel, allowing scientists to estimate age to within 1.6 years, Jonas Frisen of the Karolinska Institute in Stockholm reported this week in the journal Nature. Tooth enamel contains 0.4% carbon. Concentrations in teeth thus reflect the amount in the atmosphere when the enamel was formed. It does not work for individuals born before 1943 because their teeth formed before nuclear tests began.
May 7, 2005 |
As North Korea accelerates the pace of its nuclear weapons program, the United States and its allies have limited options to prevent one of the world's poorest and most erratic nations from becoming a nuclear power. In a matter of weeks, faint hope that North Korea might be coaxed into voluntarily dismantling its nuclear facilities through multinational talks has all but evaporated.
April 23, 2005 |
Concerned about increasingly threatening statements from North Korea, the United States has asked China to emphasize to Pyongyang that a nuclear weapons test would be unacceptable, U.S. officials confirmed Friday. The officials, who spoke on condition of anonymity, stressed that they have no new or conclusive evidence to indicate that North Korea is acting on threats to produce additional plutonium for nuclear warheads or to conduct a nuclear arms test.
November 7, 2004 |
Dozens of Idaho residents who claim nuclear tests conducted during the 1950s made them sick asked a panel of scientists to recommend that the U.S. government compensate them. The group, who call themselves "the downwinders" in reference to the toxic clouds that the wind carried their way from test sites in Nevada, described how radioactive waste coated their farms and towns 50 years ago. They believe it caused many of them to get cancer. The U.S.
CALIFORNIA | LOCAL
October 21, 2004 |
Concerned that homes may one day be built on the site of a former nuclear testing laboratory between Simi Valley and Chatsworth, Los Angeles and two environmental groups plan to sue the federal government to force a stricter cleanup of radioactive waste. The Los Angeles city attorney's office said it had decided to join the lawsuit against the U.S. Department of Energy, which operated the lab, because current cleanup plans could endanger city residents.
September 22, 2004 |
Shrugging off an ultimatum from the U.N. nuclear watchdog, Iran disclosed Tuesday that it had started converting tons of raw uranium as part of a process that could be used to make nuclear arms. Tehran also continued to insist that its purpose was only to produce electricity. Conversion of raw uranium can produce material for generating electricity or highly enriched fuel for nuclear bombs.
September 18, 2004 |
Was that a mushroom cloud that the satellite saw hovering menacingly over North Korea or merely a patch of bad weather? Trying to end one of the more bizarre episodes in the standoff over North Korea's nuclear program, South Korea's deputy unification minister, Rhee Bong Jo, said Friday that "a closer inspection of the cloud suggests that it was a natural phenomenon." The cloud -- as well as an unexplained tremor measuring about magnitude 2.6 -- was detected Sept.
September 13, 2004 |
Offering North Korea's first explanation for a mysterious explosion last week that raised fears of a nuclear weapons test, a top official of the reclusive communist state said early today that the massive blast was the deliberate demolition of a mountain as part of a hydroelectric project.
July 5, 2004 |
India successfully fired a nuclear-capable missile off the coast of the eastern state of Orissa in what a Defense Ministry spokesman called "a routine test." The Agni 1 missile has an estimated range of 750 miles. India is developing an array of missiles as part of its nuclear defense strategy against neighbors China and Pakistan. India staged nuclear tests and declared itself a nuclear power in 1998, prompting longtime rival Pakistan to respond with similar tests.
June 25, 2004 |
North Korea told the United States on Thursday that it would test a nuclear weapon unless Washington accepted Pyongyang's proposal for a freeze on its atomic program, U.S. officials said. They said the threat came during a two-hour meeting in Beijing between Assistant Secretary of State James A. Kelly and North Korean negotiators at a six-nation conference on Pyongyang's nuclear ambitions. The threat is not new, the U.S.