- News Home
27 November 2013 12:59 pm ,
Vol. 342 ,
The new head of the National Center for Science Education promises to "fight the good fight" against attacks on...
Analyses of the H7N9 strains isolated from four new cases show that the virus is evolving rapidly, heightening anxiety...
In 2009, Jack Szostak shared a Nobel Prize for his part in discovering the role of telomeres, the end bits of...
Science has exposed a thriving academic black market in China involving shady agencies, corrupt scientists, and...
Paper-selling agencies flourish in the aura of reputable businesses. For some scientists, it may be difficult to tell...
Until recently, the Defense Advanced Research Projects Agency (DARPA) kept its plans for its $70 million portion of the...
Featuring the first lunar rover in 40 years, Chang'e-3 is seen as an important milestone on China's quest to send a...
Data collected by satellites and floating probes have chronicled a 2-decade rise in the temperature and thickness of a...
- 27 November 2013 12:59 pm , Vol. 342 , #6162
- About Us
Quake Question #14: Will Radiation Reach Hawaii?
22 March 2011 5:48 pm
Readers ask: Will radiation from the Japan quake and tsunami affect the Hawaiian Islands by May 2011? Should we cancel trips to Hawaii for our families?
Science answers: You don't need to cancel your trip to Hawaii. Any released material must travel over 6000 kilometers to reach the Hawaiian Islands. The prevailing winds are indeed heading east over the Pacific from Japan, but the vast majority of radioactive material will rain down into the ocean within a few hundred kilometers of the nuclear plant.
Which isn't to say that radiation won't be detectable in Hawaii. After all, this is what makes radioisotopes so useful for biological research: They are detectable in even the most minuscule (and safe) amounts. A trace amount of radioactive xenon-133 has already arrived in California at a level one-millionth the dose received from natural sources like bricks.
Only gases such as xenon are likely to make it that far, and only at such highly dilute concentrations. For the less volatile radioisotopes to travel, they must ride on particles that are heavier than air. Gravity will take care of those.
In an address from the White House, President Barack Obama reassured residents of Hawaii and the U.S. west coast that no precautions are needed. But there's no harm in keeping an eye on the radiation info page maintained by the Centers for Disease Control and Prevention.