After seeing success with its grant to pay for Radon Mitigation Systems in homes, West Des Moines officials say they hope ...

The EPA says radon should be mitigated if air quality tests show four picocuries — a unit of radioactive decay — per liter, and people should start considering mitigation at two picocuries.

The gas is invisible and odorless, and can cause lung cancer after becoming trapped in homes and buildings. But there are almost no rules governing it as the Treasure Valley grows.

At an estimated 10 million picocuries per liter in a confined area, it was the second-highest concentration reported in any tritium leak and pollution incident nationwide.

Iowa ranks first in the percentage of homes that have radon levels at or above the EPA’s accepted level.

Radon is an odorless, colorless gas that is a leading cause of lung cancer. This Lehigh Valley student says more schools should test for it.

Testing results released by Utah Radon Services, a statewide radon mitigation company, show that about half of homes have a lower, but still concerning, exposure of two picocuries and above.

A dangerous gas hiding in the soil is the leading cause of lung cancer among non-smokers. Schools aren’t required to test for it, but a local group and lawmaker are trying to change that.

Radon mitigation work is nearly complete at the Old Courthouse after the naturally occurring gas was discovered at actionable levels last summer.

The figure “0.167 curies” may give the impression of a small amount, but this amount of tritium contamination already in the Mississippi translates to 167 billion picocuries.

Both state and federal agencies require that radium levels in drinking water be under 5 picocuries per liter. In September, however, testing in Perry Park showed radium levels of 12.9 picocuries ...

In an August news release, Ketterer said he had measured plutonium in concentrations as high as 86 picocuries per liter in water, 78 picocuries per gram in sediments and 5.7 picocuries per gram in ...