Playwright Eduardo Vega remembers his father as a wonderful, warm and inspiring man, but one who also suffered with post-traumatic issues related to his incarceration and torture as a political ...

An ink that changes colour when exposed to light, like an octopus does to match its surroundings, could one day be used for automatic camouflage. Most colour-changing inks and materials use chemical ...

Scientists have created a new light-activated ink that can change color on demand. It’s made up of microbeads of different colors that rise or sink in response to different wavelengths of light so ...