Engineers built tattoo inks that switch on under UV light and fade indoors, and the inventor has worn the color-changing ...

Once the hallmark of bikers, sailors, and general riff-raff, tattoos have become far more mainstream, decorating the bodies of everyone from teachers to lawyers to world-class surgeons. Nonetheless, ...

The 'Weekly Stationery Door' is a live YouTube broadcast where the Stationery King (Masayuki Takahata), editor-in-chief of ...

Tattoos are, typically, permanent. This is both the appeal of the body art, but also one of its major drawbacks. Now a team of researchers from the University of Colorado Boulder have developed a new ...

Tattoos are, by definition, permanent. But what if they didn’t have to be? While many people get tattoos to express themselves, others receive them for medical reasons, including marks to guide a ...

Chris experiments with banknotes from around the world that glow under UV light, revealing their hidden security features. He then prints his own invisible ink designs on them to create magical ...

It’s pretty hard to fight an opponent you can’t see. That’s what makes Invisible Woman an invaluable member of the Fantastic Four. She can disappear in the blink of an eye and take out entire factions ...

Discover how innovative tattoos can fade away for interviews and reappear for social events. Explore the science behind this ...

There is a moment in becoming a father that nobody really prepares you for. It isn’t the first sleepless night. It isn’t the first diaper change, or the realization that a tiny human being can somehow ...

There's a kind of wave in the ocean that can dwarf anything at Nazaré, home to what most people think of as the world's biggest waves. You won't see it break, won't hear it roar, and you could sail ...

Josh has a degree in Biology from University College London, and specialises in animals, palaeontology, climate, and the environment.View full profile Josh has a degree in Biology from University ...

A chalk line scrawled on a building. Invisible ink. A secret message wedged between the wooden planks of a park bench. Such old-school espionage tactics — known as “sticks and bricks” — could become ...