Graham Readfearn is an independent journalist based in Queensland, Australia, with 20 years experience as a reporter and writer on newspapers, magazines, radio and online.
The tiny particles have been linked with widespread environmental damage, as well as cancers and a range of adverse health impacts related to the lungs and heart.
More than 75,000 Kaiser Permanente employees in six states and Washington, D.C. are set to stop working for three days starting Wednesday to protest unfair working conditions and unsafe staffing levels.