Atmospheric helium levels are rising, research confirms

Scientists at Scripps Institution of Oceanography at UC San Diego used an unprecedented technique to detect that levels of helium are rising in the atmosphere, resolving an issue that has lingered among atmospheric chemists ...

Reassessing radon as a reliable groundwater tracer

All radioactive materials which naturally occur in water will produce at least one isotope of radon as a decay product. As radioactive atoms are transported through groundwater aquifers in the form of gaseous radon, they ...

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