Health

Ultrafine pollution particles create air of menace

An air quality study has for the first time detected nano-sized particles of air pollution in children's urine. With a diameter of just 100 nanometers—a thousandth of the width of a human hair—these ultrafine particles ...

Medical research

Tattoo therapy could ease chronic disease

A temporary tattoo to help control a chronic disease might someday be possible, according to scientists at Baylor College of Medicine who tested antioxidant nanoparticles created at Rice University.