In situ measurement of cesium-137 contamination in fruits from the northern Marshall Islands

Cesium-137 contamination from nuclear testing remains detectable in fruits across 11 islands in the northern Marshall Islands, including Bikini Atoll, decades after the tests. The study, published in Proceedings of the National Academy of Sciences, found that some fruits still exceed international safety standards for radioactive contamination. Using in situ measurements, researchers analyzed cesium-137 levels, a long-lived radionuclide (half-life ~30 years) from fallout, particularly from the 1954 Bravo test, which spread radiation across land and ocean, affecting Marshallese communities on atolls like Rongelap and Utirik. The findings highlight ongoing environmental and health risks posed by legacy nuclear contamination in these regions.

Topping, C. E. W., Abella, M. K. I. L., Berkowitz, M. E., Molina, M. R., Nikolić-Hughes, I., Hughes, E. W., & Ruderman, M. A. (2019). In situ measurement of cesium-137 contamination in fruits from the northern Marshall Islands. Proceedings of the National Academy of Sciences, 116(31), 15414–15419. https://doi.org/10.1073/pnas.1903481116