A couple of years ago, a group of entrepreneurs successfully Kickstarted a little something known as the Chameleon Pen. In a nutshell, it's an art pen that changes color tone as you draw – for example ...

Muji Gel Ink Ballpoint Cap Type Pen $1.90 at Muji “A good pen often stands between me and my next great idea,” says Dhonielle Clayton, bestselling author of “The Marvellers.” Clayton is still fond of ...

From the processors in phones to the motherboards of computers, silver tracings of electronic circuitry underlie many common devices. But scientists are now putting circuit design in the hands of the ...