Rachel Feltman: Nearly a third of U.S. adults have tattoos, so plenty of you listeners can probably rattle off the basic guidelines of tattoo safety: Make sure you go to a reputable tattoo artist who ...

Mad scientist kind of moments happen fairly often for nanoengineer Carson Bruns. A few months ago in his lab at the University of Colorado Boulder, he tested his latest invention on his own arm and ...

Nearly one in three Americans surveyed this summer said they have at least one tattoo, according to the Pew Research Center. But while tattoo artists are required to have a license in all 50 states ...

While Magic Ink is a cool party trick, Bruns and his colleagues have made other inks that align with their bigger goal: to make tattoos helpful. Bruns and his colleagues have made one that changes ...