In every case, the Government knew it was exposing its workers to dangerous levels of radiation.

They are usually open, and therefore exposed to high levels of evaporation.

Workers in certain jobs can be exposed to much higher levels of styrene than the general population.

One in five children has been exposed to high levels of lead.

Our workers have been exposed to higher levels than anybody, and we've never seen an increase in cancer rates.

"Women are being exposed to higher levels of Jewish education and at an earlier age than ever before," she said.

Being exposed to low levels for a long time can change the color of your skin.

Children do better when not exposed to high levels of risk or adversity.

Nearly one in four children under the age of six have been exposed to high levels of lead.

One in four children has been exposed to unsafe levels of lead.