Ultra-violet

An intriguing new glue can basically be switched on and off on demand. The adhesive sticks together when hit with one wavelength of light, and breaks apart with another, allowing it to be removed and reused easily – potentially, even underwater.

Instead of heating of ABS or PLA plastic filaments like the 3Doodler from WobbleWorks, the CreoPop uses light-sensitive inks that solidify when exposed to UV light, so sketchers young or old don't need to worry about having to steer clear of the piping hot creative end.

Most UV-monitoring wristbands favor function over fashion, which is why Netatmo has launched JUNE, a UV-tracking bracelet and accompanying app aimed at helping users to better manage their sun exposure and look fashionable doing it.

Researchers at New York University have developed an almost invisible flash photography system, the dark flash system